Prison School Wiki
If my escape plan reaches them I will have another offense on my record and my sentence will be extended for another month.
Kiyoshi in jail

Kiyoshi Fujino (藤野 清志 (ふじの きよし) Fujino Kiyoshi), nicknamed Kiyoshi (キヨシ), is the protagonist of Prison School and is one of the five first-year boys in attendance of all-girls school Hachimitsu Academy. He had a crush on Chiyo Kurihara, though he is also the object of affection for Hana Midorikawa and it's implied that he has some feelings for her too.


Kiyoshi is a tall and handsome young man of average weight with dark blue hair, black eyes and he is lean at the start of the series, but he gains some muscle during his incarceration in the Prison Block of the school.

During his stay in the Prison Block, Kiyoshi wears the standard male prison uniform of a sleeved white striped shirt and striped trousers. In his second stay, he wears boxers for some time because of giving his shirt and trousers to Chiyo Kurihara.


Kiyoshi is a level-headed individual who seems to have a strong resolve under hard pressure. Unlike the other boys, he does not let his desires get ahead of him, and tends to be the rational member of the group. Kiyoshi is markedly the most normal of the boys in design and character, as well as the main narrator of the manga in thought.

He is tenacious but lacks the stubborn perversion of the other boys. However, he is capable of sometimes doing things that seem untoward or shocking to the other boys, such as cross-dressing to escape the Prison Block. Though he has sexual desires, he is much better at controlling them than the others; this is shown when he refuses to take advantage of Chiyo Kurihara's attempting to throw herself at him due to her feelings of insecurity and inferiority towards her sister. Kiyoshi develops a deep love for Chiyo and this love is the drive of most of his actions throughout the series, and he engineers breakouts, sacrifices his first kiss, and goes to extreme lengths to stay in the same school with her and develop their relationship. Kiyoshi can be oblivious to his selfishness sometimes as seen when he intended to use the money that he gathered from other to buy something for his own personal reason.[1]


After enrolling at all-girls school Hachimitsu Academy with middle school friend Shingo Wakamoto, Kiyoshi is the first boy in Hachimitsu Academy to make contact with a girl. She is his classmate Chiyo Kurihara, a dedicated fan of sumo wrestling. Kiyoshi and Chiyo began a budding friendship when Kiyoshi feigned interest in sumo wrestling as well. Chiyo even invited him to watch a sumo match on the weekends with her. At night after school, Kiyoshi and the other boys attempted to peep at girls in the female bathing area. Kiyoshi initially avoided capture and the subsequent public lynching organized by the Underground Student Council, which led Chiyo to believe that Kiyoshi did not peep. During the lynching, he was caught and exposed by 20th USC President Mari Kurihara. For this offence, the boys were sentenced to spend one month within the school's prison facility.

During the boys' prison stay, they were guarded by the USC Vice-President Meiko Shiraki, who physically abuses the prisoners regularly. At one point, Kiyoshi thought that the abuse was going too far and tries to prevent it, but the rest of the boys revealed that they perversely enjoy Meiko's abuse. USC Secretary Hana Midorikawa took over prison guard duty briefly, and she dresses too modestly and was too violent for the boys' liking. However, due to an accident, Kiyoshi saw Hana urinating and her attempt at revenge caused Kiyoshi to urinate on her by accident. This greatly humiliated Hana and she took a leave of absence, leaving Meiko to take over the guard duties again.

After Mari decided to remove the prisoners' weekend privileges, Kiyoshi decided to break out of prison for a few hours in order to fulfill his promise to watch the sumo match with Chiyo. Kiyoshi was assisted by Gakuto, in exchange for helping Gakuto purchase a collector figurine during the prison break. During their secret collaboration, the 3 other boys misunderstood that Kiyoshi and Gakuto were involved in a gay relationship. The prison break was a success but the USC found out about it. It was revealed that Chiyo is the younger sister of the 40th USC President Mari Kurihara and daughter of the school's chairman. Chiyo sent a photo of herself and Kiyoshi to Mari and the Chairman, not knowing that Kiyoshi broke out of prison. Upon this revelation, the boys' prison sentence were extended by another month and Kiyoshi earned temporary alienation from the other boys.

The USC began enacting Operation Boys Expulsion (男子退学オペレーション Danshi Taigaku Operēshon), codenamed DTO; a conspiracy that manipulates the boys to commit two more breakouts in order to gain the school's support to expel them. The operation was a success but the boys' friendships with each other were rekindled. The boys decided to work together to find evidence of DTO in order to overturn their own expulsion. Kiyoshi managed to solve the Chairman's "Tits or Asses" riddle, hence granting the boys one day's extension on their expulsion. To open up the last window of opportunity to gather evidence of DTO, Kiyoshi had to exploit Hana's grudge on him by french-kissing her. When evidence of the USC's conspiracy was exposed to the Chairman, Hana attacked and injured Kiyoshi in a fit of rage when she realized that Kiyoshi kissed her only for the sake of overturning the boys' expulsion. Mari confessed her own crime in front of the Chairman, and hence the boys are freed from prison and their expulsions overturned.

Kiyoshi declined to further pursue the injury incident, out of guilt for deceiving Hana. Nevertheless, the Aboveground Student Council still received the Chairman's support to imprison the Underground Student Council. When the ASC framed Meiko for burning a tree with the crow hatchlings, Kiyoshi attempted to collect evidence on Chiyo's behalf, but was caught trespassing in the ASC's office and sent back to prison. A recently-freed Hana blackmailed Kiyoshi to take romantic pictures with her. ASC President Kate also obtained blackmail material against Mari by successfully manipulating the imprisoned Kiyoshi and Mari into compromising positions. Kiyoshi decided to assist Mari against the ASC, with the support of the boys. The boys realized they and the USC had a common enemy with the ASC when the boys discovered that the ASC planned to replace the Wet T-Shirt Contest in the USC's yearly agenda with a camping trip.

The boys began secret communication with Kiyoshi and Mari in order to pass them the necessary materials required for Mari's prison break plan (Which later turned out to be a bluff for Mari to enact her actual plan of getting close to Kate to nullify Kate's blackmail against her). Kiyoshi had to mess with Prison Guard Risa's head on multiple occasions to prevent her from finding out the details of the plan. When Chiyo ended up in prison and struggled to clarify with her sister Mari about the rumors of her promiscuity, Kiyoshi and Mari helped Chiyo to clear her doubts, only for her to misunderstand that they are planning a birthday surprise for her. With Kiyoshi, the rest of the boys, and Hana's help, Mari successfully achieved her goal, allowing the USC and ASC to compete more evenly in the upcoming All-Student-Council Cavalry Battle in the School's Sports Festival.

On the day of the Sports Festival, Kiyoshi and the boys took the side of the USC during all the competitions. Kiyoshi was intercepted by Hana who still had the urinating feud on her mind, and both of them decided to settle the matter once and for all. Hana finally succeeded urinating on Kiyoshi, and kissed him before leaving. However, both soon realized they wore each other's underwear by mistake, and Hana refused to do the exchange despite Kiyoshi's multiple requests. They eventually got used to and actually grew comfortable with wearing each other's underwear. Kiyoshi also met up with Chiyo and misunderstood her hints about her birthday party celebration as that of planning a love confession for her. During the Cavalry competition, Kiyoshi competes as the rightward jockey of Mari's USC main cavalry team.[2] The vast crowd of schoolgirls on the ASC's side threatens to overwhelm the USC's teams, until Kiyoshi showed his erection to the schoolgirls upon Mari's persuasion, and subsequently exposed his genitals and cross-dressing panties with Hana's help. These acts kept the schoolgirls at bay, but also led to Kiyoshi's near-death experience which require Mari to revive him. Eventually, the cavalry match ended up a tie and caused the destruction of the prison.

Kiyoshi returned to regular school life as an ostracized student as a consequence of his actions during the Sports Festival. He strengthened his resolve to make his love confession to Chiyo on the day of the BBQ. He began planning for the BBQ party and started off by asking sponsorship from those who are attending, and this invoked Hana's jealousy. Kiyoshi was troubled by the perceived lack of funding required for the BBQ, and among his attempts to get more funding he unwittingly ruined Gakuto's date attempt with Mitsuko. Still tempted with getting more funds for the Yakiniku, Kiyoshi went on a paid date with Hana. She advised him on how to properly plan for the BBQ event and attempted to make her own confession to Kiyoshi at the end, but Kiyoshi was too oblivious to even realize it was a love confession.

On the day of the BBQ itself, Kiyoshi learnt that Mari is not intending to attend the BBQ and interpreted it as Mari's approval for him and Chiyo to be together. He rushes off for the BBQ, leaving Meiko and Kate to chase after Mari instead. Kiyoshi went through a lot of mishaps during his journey, and considered giving up. It was right then a policeman offered him a ride to the BBQ venue, gave him the flowers needed for the confession, and even gave him tea to drink to quench his thirst.

This was merely a brief respite though - Kiyoshi arrived to the venue to find out that Hana was trying to ruin his love confession by exposing all of the perverted acts he had done together with her. He decided to admit (almost) all of the perverted acts he had done with Hana, to a listening Chiyo, while at the same time fighting the urge to urinate. Initially, Chiyo was willing to accept all his faults and she likes him too, which led her to accept his confession. However, an enraged Hana would have none of it and exposed Kiyoshi's final lie to Chiyo - He did not keep Hana's panties in his drawer as he claimed, but was actually wearing it to the love confession. When Hana pulled off his pants to reveal this twist of events, he could no longer hold back his bladder and urinated on both Hana and Chiyo. Reflecting on himself, Kiyoshi realized that even if the love confession did not end horribly, his relationship with Chiyo was built upon that one lie that he did not peep on the girls during that fateful night. The ending also strongly implied that ultimately, the love confession failed and Chiyo become misandric, following Mari's footsteps.


Kiyoshi enters Hachimitsu Academy

Kiyoshi from the beginning of the series has been shown as a shy and introverted person who finds it difficult to relate to the other girls in the academy, therefore he used to meet with his other four friends and they choose to use code names to identify themselves.

Kiyoshi at first got tired of just observing his companions and tried to talk to some of them but it was impossible to carry on a conversation.

During class, Kiyoshi accidentally drops an eraser. While trying to pick it up, he bumps into Chiyo Kurihara who stares at his eraser that has an image of the sumo wrestler Raiden Tameemon stamped on it. Kiyoshi quickly pulls away as he fears that his strange eraser will make a bad impression on what would be the most beautiful girl in the class.

Kiyoshi meets Chiyo Kurihara

At the end of class Chiyo approaches Kiyoshi to comment that she also likes sumo wrestling. From that moment a small friendship circulates between them around that subject until Chiyo invites Kiyoshi to a sumo competition to which he promises to go.

Kiyoshi after his encounters with Chiyo begins to feel romantic feelings for her and this fantasy is interrupted by the quick decision of his friends to spy on the girls in the bathrooms. Kiyoshi is tempted and later accepts the invitation of his friends, but upon learning that his target is the first-year Class 1 girls. Kiyoshi falls into fear as they refer to his class where Chiyo will also be and does not want his classmates to see her naked, he quickly changes his mind when he sees that Chiyo is not in the bathrooms with the others therefore he offers to be who holds the rope that is tied to the cell phone that will record the girls.

Kiyoshi is found by Chiyo in the locker room

Kiyoshi accidentally drops the cell phone inside the locker room due to being surprised that the phone chosen for the recording was his and was tied to the rope without his consent, and is ordered by Gakuto to retrieve it because he owns it.

Unexpectedly while retrieving his phone, Kiyoshi is discovered by Chiyo in the locker room. But to her salvation she suffers from myopia and mistakes him for her friend Mayumi. Kiyoshi uncontrollably undresses and walks with her to the bathroom, what he comically calls paradise.

Kiyoshi remains with Chiyo inside the bathrooms where no one notices the intruder due to the excessive number of girls in them. Chiyo meets the real Mayumi, which generates a concern about who is the person who accompanies her, but again Kiyoshi is saved by a student who in a panic notices that the boys are spying on them. Kiyoshi hides inside the shower while all the other girls come out of the bathrooms scared. But unfortunately, after seeing how the other boys are tortured for spying, he is caught by the president of the Secret Student Council , Mari Kurihara .


The five boys from the academy in prison

Kiyoshi subsequently enters the prison located in the center of the first floor of the academy. Where students are penalized for their sexual misconduct and are forced to do forced labor by the CES itself, under the orders of CES Vice President Meiko Shiraki .

Kiyoshi is mistreated by Meiko

Kiyoshi acknowledges the excessive abuse Vice President Meiko has with her other fellow inmates and defends Andre from such abuse. In the cells the other boys are annoyed with Kiyoshi for defending them since they are pleased with the physical abuse that the vice president gives them. At first, Kiyoshi is outraged by the reactions of his classmates, but after a while of receiving the same treatment as others, he understands their points of view and begins to like the idea of ​​being mistreated by an attractive girl. Kiyoshi, unlike his teammates, does not show disagreement with the changing of the guard decided by Mari, Hana Midorikawa, but yes to the mistreatment of this one since they are more painful and unlike Meiko, they do not receive the visual appeal of her intimate clothes, since she wears pants under her skirt.

While in prison Kiyoshi worries about what Chiyo would be thinking of him for being there, but is unable to contact her. Kiyoshi finds a small crow on the ground and puts it back in its nest, this gesture is seen by Chiyo who recognizes that Kiyoshi is a good person and trusts that he would never spy in the bathrooms. Kiyoshi even though he was the only one who actually spied on the girls, he lies to Chiyo about having done it and reminds her of his promise that he will meet her at the sumo competition.

After Chiyo left, Kiyoshi falls from the branch where he was hanging in a position where it is completely visible to see how Hana secretly urinates in the bushes, and is proclaimed as a hero by his friends as he made Hana leave his post. on call due to the shock and psychological impact received.

Kiyoshi tries to create a hole using a fork

Kiyoshi decides to escape from prison after President Mari refused to give the boys the weekends to rest. So he proposes to create an escape route that consists of a hole in the back of the shed where they usually carry the garbage and using only a fork, with which he can exit the outside of the academy without being discovered.

Kiyoshi always begins to offer to throw out the trash and with this continue his work of escape. One day when he finished, he is secretly called by Chiyo (who is in the corridors of the second floor) and she throws a sheet of paper at him, but because it falls on the roof of the hut where Kiyoshi is, she shows him a message to this written in a notebook that says: "To Kiyoshi-kun! We will meet at the entrance of the Ryoukoku stadium at 1:00 pm on May 7 for the student team tournament. Do you have permission to leave on Sunday? Right? -Chiyo. " To which Kiyoshi nods and shows eager happiness and confidence in his escape plan. But he is surprised by Gakuto who has discovered the role that Chiyo threw in the beginning. Gakuto prevented his escape. But he learns of their interest in helping on the condition that Kiyoshi go to buy the figure of Guan Yu and his horse Chitu which are limited figures and only sell it on the same day as Kiyoshi's appointment.

Kiyoshi and Gakuto begin the escape plan

On April 27, with 10 days to go until the escape, Kiyoshi and Gakuto's initial plan was to have Hana destroy the garbage shed, so that both of them rebuilding it, they could complete the hole. But they did not count on her to monitor them throughout the process.

Kiyoshi, being Hana's target due to her "accident", is persecuted by it since she cannot bear the idea of ​​being the only one humiliated and constantly pressures Kiyoshi to make him fall into the same situation in which she was. Kiyoshi manages (unintentionally) to get rid of the guard by having another accident with her in the bathrooms, where this time Kiyoshi urinates on her but she cannot see the process because she slipped.

Kiyoshi and Gakuto advance in their escape plan thanks to Hana no longer watching them and they make the hole big enough for Kiyoshi to escape.

Kiyoshi gets stuck trying to get back to the prison

On April 30, Kiyoshi leaves the prison as a test to find a route to the station, but when trying to return he is stopped by the presence of the Director who is burying photographs, the absence of Kiyoshi upsets Meiko who begins to look for him .

Kiyoshi gets rid of the Headmaster but gets stuck in the hole. However, he manages to return before Vice President Meiko found out what happened thanks to the trap set by Gakuto so that she fell into the rubble of the destroyed shed. Kiyoshi managed to save himself from a possible penalty for his test escape.

In the cells, Kiyoshi learned that on the day of the Athletics Competition (May 7) he will have to be working with Gakuto and Shingo on the luggage. It will also be near toilets located away from the escape route.

Kiyoshi manages to find a route through the drainage channel that runs through much of the academy, using this tunnel he can more quickly reach the destroyed shed, and make his escape. In addition, he unexpectedly manages to get rid of Shingo who, scared by his behavior with Gakuto, changes teams to Joe and Andre's .

On May 3, Kiyoshi discovers that the escape route has been sealed with cement and this discourages both him and Gakuto as they do not find the possibility of escaping in any other way.

Kiyoshi plans to use Gakuto's hair for his second plan

Kiyoshi enters the determination to escape at any cost as he recognizes the sacrifice that Gakuto has made for him, and comes up with another way to escape in which he will pretend to be a girl and sneak in with the others at the end of the hours. lessons.

On May 5, Kiyoshi with the help of Gakuto manages to get the female school uniform and they prepare for the day of escape.


Kiyoshi begins to make preparations for the escape, but before doing it he has lunch with Gakuto and they talk ironically about everything they have gone through to get to where they have arrived.

Kiyoshi is stopped by Mari

Kiyoshi enters the bathrooms and leaves the recording made with Gakuto, then he goes down the drain channel and when he leaves he hides in a place where he can disguise himself. One of Gakuto's hair flies through the air until it reaches the vice president's hands, she begins to approach where Kiyoshi is. Kiyoshi, realizing this, tries to get dressed as quickly as possible, which ends up breaking it but fortunately causes Meiko to mistake him for one of the schoolgirls from the institute.

As he approaches the exit of the academy, Kiyoshi is stopped by the president of CES for the way he is wearing his backpack, but lets go of it when he realizes that he is wearing it due to the tear in his uniform. Before leaving, Mari notices the shoes she is wearing and this makes her suspicious, but does not prevent her from leaving.

Kiyoshi on his date with Chiyo

On the date, Kiyoshi returns to wearing prison clothes and together with Chiyo they watch the sumo fights. Kiyoshi separates from Chiyo because he had to eat all the onigiris that she prepared and this made him have to use the bathroom (since they were not so well prepared and he had already eaten before), while Kiyoshi was not, Chiyo accidentally found that what Kiyoshi carried in her bag was her uniform, and this caused her to leave but not before showing her repulsion for what Kiyoshi had.

Kiyoshi hurt by the outcome of their date, decided to return to prison and is discovered by Meiko in the bathrooms crying about it.

Kiyoshi hands the figures to Gakuto and after they both leave the bathrooms they are captured by the president who had already discovered the escape, all because Chiyo had sent him the photos that she had taken with Kiyoshi at the appointment as a thank you. for letting it out.

Kiyoshi is discovered

Kiyoshi is beaten by Shingo for damaging everyone's stay in prison and is put in a room isolated from the others while awaiting the CES sentence, then he is interrogated where he blames himself for all the escape.

Kiyoshi is persuaded by the president to withdraw from the academy due to the rumor of his escape and the impact it will have on the other students. Kiyoshi at first gives in but is stopped by Chiyo who found out what happened due to the same rumor and she threatens her sister to sign the expulsion form as well if she causes Kiyoshi to be expelled from the academy.

Kiyoshi decides to stay and returns to his stay in prison, already extended to one more month due to the escape and leaving two more to be expelled. But unlike before, he is excluded by his other peers due to his selfish actions.

Kiyoshi does not show opposition to his exclusion and on the contrary asks Gakuto to also participate, since if he did not do so they would find out that Gakuto helped him with his escape.


Kiyoshi at first does not realize the plan that President Mari begins to carry out for the expulsion of the boys and is also intimidated by Hana who is still planning her revenge.

Kiyoshi is hurt by Joe

Kiyoshi sees Shingo talking to Meiko which makes him curious and realizes the problem between Joe and Meiko due to Mari's crows attacking the prisoner's ants.

Kiyoshi saves President Mari from being stabbed with a piece of wood that Joe had picked up and planned to hit her due to the desperation the situation had put him.

Kiyoshi who is seriously injured but defends and fixes Joe's actions, where he says Kiyoshi says that his injury is not that serious and uses the excuse of his hypothetical hemorrhoids to justify the excessive bleeding. Although this act caused great commotion for both the members of the prison and the students who were watching.

After this and healing in the infirmary, Kiyoshi is threatened by Hana who plans to take revenge by urinating on him, however this revenge is interrupted by Chiyo's presence, which causes both of them to hide and Kiyoshi unintentionally makes Hana faint. Kiyoshi worries about Hana's attitude but apparently she can't remember why she fainted.

All five are introduced to director Kurihara

According to prison rules, if three escapes are made, the director must sign the documents authorizing the expulsion of those sentenced to prison. Therefore Director Kurihara agrees to sign them in two weeks.

Kiyoshi along with the others discover a way to prove his innocence in the face of the escapes planned by the CES and they set out to recover the data from the OEC.

Kiyoshi confronts Meiko to buy time

Kiyoshi, Shingo, Joe and Andre plan to distract Meiko in a pulsing contest in the jailer room to make Gakuto retrieve the data, in the battle Kiyoshi is distracted by seeing one of Meiko's nipples and quickly loses. However he managed to get Gakuto to get the keys to the room but unfortunately he did not get a single minute of the ten that Gakuto needs.

Even so, the plan ends in failure and in the end they do not get the data.

When it is seen that there is no hope to anticipate expulsion. Kiyoshi receives a message from Chiyo which says that they can communicate that way in case he needs it, Kiyoshi persists that they can still avoid his expulsion, they write to the director but the allegation is destroyed by Meiko.

On the day of the expulsion, the Director appears before the boys for a last talk with them, this because Kiyoshi secretly wrote a threat that reached the director, which was about the photographs buried by him on the outskirts of the city. school.

Director Kurihara recognizes Kiyoshi as a true "Ass-Man"

The boys try to blackmail the director into extending the deadline to prove their innocence, which is ultimately granted by Kiyoshi's fearless response to show that he shares the same fetishistic opinion as the director himself.

This act of complicity makes the director himself agree to postpone his sentence for another day. Kiyoshi thanks Meiko because if he hadn't seen her, he wouldn't have come up with the right words to convince the Headmaster.

The opportunity of the five makes them start a plan to recover the data again.

Kiyoshi sends a letter to Chiyo for her to help them with their plan, then together they try to think of a plan to distract the guard and thus recover the data. Unfortunately for Kiyoshi, Hana is the guard and has also regained her memories of what happened in the infirmary room.

File:Kiyoshi defeats Hana

Kiyoshi openly offers to be the distractor since he has a relationship with Hana of which the others have no idea, therefore he hurts Gakuto as part of the plan to go to the jailer room (where the computer is). It consists of Kiyoshi making sure to leave the door open for Chiyo after she goes out with Hana.

Kiyoshi confronts Hana for which they begin a series of events that develops in a contest of courage between the two and ends in an almost passionate outcome. Kiyoshi after defeating Hana, completes his part of the plan.

Kiyoshi and his friends are released from prison

The next day, the day of the final verdict, Kiyoshi together with his accomplices explain the plan by which they managed to prove their innocence, Kiyoshi is fractured of his right arm by Hana since it hurt his feelings for what happened the day before and the five boys are released from their time in prison.


Kiyoshi has indescribably high luck to get out of the worst situations that arise (even if they end in misunderstandings), he also shows to have a brilliant mind, although on many occasions he is not aware of what he is doing.

Kiyoshi usually expresses himself masterfully both poetically and philosophically when he enters a state of mental crisis.


Chiyo Kurihara[]

Kiyoshi falls in love with Chiyo

Kiyoshi from the beginning of the series shows to have a romantic interest in her since he met her, and with which he spoke thanks to an eraser with a sumo image that his mother gave him. He makes her a promise to go with her to watch the fights and to eat together (although he really does not like sumo), which is why he will do everything possible to escape from prison.

Kiyoshi's date with Chiyo

Kiyoshi always does everything possible so that Chiyo does not think badly of him, so much so that his personality changes abruptly with her presence making Kiyoshi a much more shy introvert character, this is noted by his friends in the OVA as they affirm that when he was in prison he was much colder and more unfriendly.

Kiyoshi on many occasions fantasizes a lot about Chiyo, which he does not do with any other girl in the series.

Kiyoshi is defended by Chiyo

Chiyo and Kiyoshi have developed a very solid friendship during the series, so much so that Chiyo is unable to see Kiyoshi as a bad person and whenever she is in trouble, Chiyo runs in her favor to help her.

When Chiyo enters the prison, Kiyoshi looks surprised since he did not imagine that Chiyo was going to enter as well. Kiyoshi learns of the fact that Chiyo saw him and Mari about to "kiss" a question that Kiyoshi frames that Chiyo's concern is due to jealousy that she is having and tries to remedy the misunderstanding, unfortunately it only makes it worse.

Kiyoshi makes Chiyo see reason

Kiyoshi is separated by Mari therefore he does not manage to interact much with Chiyo during his stay in prison and his escape plan actions make Chiyo think badly of the two, until Chiyo changes his personality leaving Kiyoshi shocked.

Despite a unique opportunity to have a sexual approach with Chiyo, Kiyoshi decides to reassure her and talk to her about the reason for her behavior. This fact makes Chiyo feel confident and tell him why she is imitating a "bitch". Kiyoshi knows he missed his chance but is happy that Chiyo is back to her usual self.

Over the course of the series, Kiyoshi always sees Chiyo as the source of her inspiration to face each challenge as even after receiving hatred from all the girls at school, she did not care as long as she got along with him. Chiyo.

Despite death, Kiyoshi does not give up on Chiyo

Kiyoshi tends to act selfish when it comes to Chiyo as he had the idea of ​​throwing his friends off the roof when they were about to spy on the girls just so they wouldn't see Chiyo.

Kiyoshi tends to lie when he is with Chiyo, this may be because he wants to hide his perverted behaviors (which he managed to avoid in all chapters of the series, except for the final chapter).

Kiyoshi has publicly expressed his feelings for Chiyo, revealing that he would even confess to her at the end of the cavalry battle.

"The perfect confession" according to Kiyoshi

Chiyo indirectly prevents Kiyoshi's suicide by turning

Kiyoshi on Chiyo's lap

the only reason that Kiyoshi is still alive. She lays him down on her lap and calms him down, this fact impacts Kiyoshi so much that his main objective after coming out of his depression is to confess to her at Tanabata. Kiyoshi faces a lot of difficulties to meet Chiyo, but no matter how Kiyoshi did not give up and even dared to run all the way to reach his destination.

Kiyoshi confides in Chiyo at the time that he had the opportunity to speak being as honest as possible and also told about his semi-passionate relationship with Hana. Kiyoshi belittled himself saying that he was not worthy of being Chiyo's mate because of everything he has done and because of his perverted thoughts.

Kiyoshi blushed at Chiyo's words

Still Kiyoshi never imagined that Chiyo would judge him so positively so much so that he was perplexed after hearing the words of thanks that she said to him right after hearing his confession

Kiyoshi reacts to Chiyo's acceptance of her confession

Chiyo accepts Kiyoshi's feelings thus formalizing a romantic relationship between them. This rejoices Kiyoshi who explodes with happy screams.

Despite everything going to her favor in the end Hana manages to get away with it and managed to show Chiyo the perverted nature of Kiyoshi by revealing that Kiyoshi wears Hana's panties this fact was the last straw that made Chiyo lose all patience. that he had been keeping while he found out about every "incident" with Hana, At the end of the manga a sad Kiyoshi is seen because he lost all his opportunities to date Chiyo because he could not get rid of his perverted thoughts about Hana since she wore her panties even on the day of her confession.

Hana Midorikawa[]

Kiyoshi watching Hana urinate

At the beginning in the prison he sees her as another torturer, until she accidentally falls in the place where she was urinating, in a position in which she can perfectly see the act in front of her, which to Hana in the face of shame caused a trauma and she tries to chase Kiyoshi until she sees him in the position she was in.

During the series Hana involves Kiyoshi in perverted situations where he always ends up humiliating her and frustrating her plans for revenge. Committing a lot to the dignity of both characters since they are always on the verge of being discovered in one of those many perverted situations.

Hana does not miss any opportunity since according to her, she is one of the people who always go to the end of something, this is reflected when she did not mind having to remove her panties in front of Kiyoshi in order to get her revenge.

Hana orders Kiyoshi to let her see how he urinates

As the series progresses after a suffocating situation of being discovered, Kiyoshi kisses Hana in such a lewd way that it causes her to faint. She from so much resentment and obsession with him (due to similar situations), begins an attraction for him, to which Kiyoshi corresponds but putting her feelings for Chiyo in danger .

Kiyoshi kisses Hana

After that, when the CES members go to prison, it seems that Hana had forgotten about Kiyoshi, until one day she is informed that the way in which Kiyoshi confronted her (the fact of taking off his pants) is being popularized by the other boys, making Hana want to take revenge on Kiyoshi one more time until looking for him to the same prison where he was locked up.

Kiyoshi recognizing how cute Hana looks

As Kiyoshi is generated a kind of fear towards Hana because whenever he sees her, he gets the idea of ​​the revenge that she wants against him, by advancing the scenes Kiyoshi as usual manages to gain total control of the situation . A matter that lasts relatively equal to the control that Hana takes when she sees that she is no longer manipulating him. This is reflected in every situation they are faced with.

Kiyoshi and Hana's relationship in this instance transforms from revenge to something a bit more platonic between them, as Hana tends to blush at Kiyoshi's words of praise.

Kiyoshi about to kiss Hana

Apparently Kiyoshi and Hana develop a kind of attraction (romantic on her part) but for Kiyoshi it becomes an attraction for sexual instinct. This he has affirmed that it is because of the high tension with which they are in each situation since he was about to kiss her but this time on his own whim.

Kiyoshi accesses all of Hana's whims, such as holding hands or taking photos, facts that Hana treasures on her cell phone, in a file with a heart and in private (things that Kiyoshi does not know at all)

After that they are not seen together again, with the exception of when Hana is in charge of bringing clothes to Kiyoshi, Kiyoshi, thinking that it was Risa, reveals her entire lower part. Hana faints from the impact and then reveals her disagreement for the "Ouroboros" with Mari.

Before the cavalry battle, Hana seeks out Kiyoshi to do her revenge, which Kiyoshi agrees to in order to end the chase between him and Hana once and for all.

Kiyoshi imagines a life with Hana while she urinates on him

Kiyoshi and Hana cover themselves completely naked on the futons to carry out the golden bath while they pose the "Ouroboros" Done that ends with the culmination of Hana's revenge.

Kiyoshi is kissed by Hana for the second time

Although Kiyoshi is not aware of Hana's feelings, he does not deny the fact that he wanted to give her a chance (since when he is urinated by her he imagines a world where he and Hana are a formal couple), but for the Hana's hostile way he has mistakenly thought that there is no possibility that she is attracted to him.

Kiyoshi is kissed by Hana after he finishes his revenge with him, this fact Kiyoshi cannot explain, and inadvertently they exchange underwear.

Kiyoshi and Hana are the most synchronized characters in the series, so much so that Hana mentions that together with Kiyoshi she would be able to do anything.

Hana and Kiyoshi quote

Kiyoshi claims that his kiss with Hana was the most exciting thing he has ever experienced (before he replaced it by feeling Chiyo's breasts while he was lying on her legs).

Despite liking Chiyo, Kiyoshi does not ignore the fact that Hana finds her cute and even Hana himself has stated that he would go out with her only if Chiyo rejected him (but this statement seems to be made in a joking tone).

Kiyoshi states that Hana is like his older sister, thus proving that Kiyoshi does not see Hana as a couple. In the last arc Kiyoshi when seeing how Hana interferes in her confession shows some antipathy for her. To such an extent that every action she does classifies it as an attempt to annoy him more.

Mari Kurihara[]

At first their relationship was one of enmity, but after she entered prison, Kiyoshi sees her in a

Kiyoshi hugs Mari to communicate the plastic bottle (kiss in code from the boys)

different and with which they share a complicity relationship, but due to the shameful and perverted situations that arise, these two make a deeper approach which generates jealousy in Chiyo and curiosity in Kate . Kiyoshi during his second stay in prison, sees Mari and Meiko attractive but in a sexual sense. This had generated complications in his relationship with both since he tends to be treated as a pervert by them.

Mari and Kiyoshi generate a quite acceptable relationship of trust, which is seen by Kiyoshi's actions that are a bit exaggerated with her. Since apparently with her he does not feel shy to approach directly, hug her, say things to her face or even touch her breasts (although all these things end with a beating by Mari)

Kiyoshi nevertheless sees Mari as a good friend and a future sister-in-law, therefore she asks for her blessing when she declares to Chiyo.

Takehito Morokuzu[]


  • The name Kiyoshi means "clear, pure clean" (清) (kiyo) and "will, purpose" (志) (shi).
  • Kiyoshi's surname Fujino means "wisteria" (藤) (fuji) and "field, wilderness" (野) (no).


  • At 2 months, 1 week jail time by Volume 17, Kiyoshi has served the longest time incarcerated in the school's Prison Block out of the five boys for:
  • Kiyoshi has been the subject of the most perverted situations out of the five boys; this contrasts with his moderate behavior in comparison to the other boys.
  • Kiyoshi is the first of the five boys to kiss a girl; he kissed Hana Midorikawa to save the five of them from expulsion.
  • Kiyoshi's mother is a fan of sumo wrestling; the rubber she buys him & her knowledge of sumo inadvertently lead to his first relationship with Chiyo.[3]
  • In the manga, Kiyoshi is the only character in the manga whose age is revealed so far; he is 15 years old [4].
  • Kiyoshi's character design has a slight visual resemblance to Makoto Yuki from the Persona 3 video game.
  • Kiyoshi also bares a resemblance to Yato from Noragami as they coincidentally have the same Japanese voice actor Hiroshi Kamiya.[5]


Character Design[]



  1. Prison School Volume 26 Chapter 250, Page 7
  2. Prison School Volume 21 Chapter 202, Page 16
  3. Prison School Volume 1 Chapter 1 Page 21
  4. Prison School Volume 15 Chapter 140, Page 1
  5. Prison School Season 2 Updates


Characters of Prison School
Hachimitsu Academy
First-Year Boys:
Underground Student Council:
Aboveground Student Council:
Hachimitsu Academy:
Other Characters
Criminal records