Love Him If You Dare (世界で一番不運で幸せな少年 Sekai de ichiban fuun de shiawase na shounen) is the 119th chapter of the Prison School manga, serialised in Weekly Young Magazine on December 2nd, 2013 and published in tankobon format in Volume 13 on May 2th, 2014.
Summary
Kate is excited by the scene she saw : Mari covers Kiyoshi's eyes and direct him. Kiyoshi mistakenly suck her knee, and is then direct by Mari to suck her thigh but is repulse when Mari found he is a little too careful. Kiyoshi then mistakenly again suck her stomach, her hip and then nearly her crotch. Kiyoshi finally found the right place and began to suck the poison out.
Mari then thank Kiyoshi and state that she have a debt to him she will paid, but she can't finish as snake bit Kiyoshi's butts. In the meantime, Meiko apologises she couldn't do what Risa says : give a punishment to Andre because Risa can't due to her small breast size. Risa decide to leave it.