Loved this one sooo much.
A new dorm president takes over the position of a dorm president and starts disciplining the dorm delinquent. Whom he met when he was younger, and falls in love with him, that's why he becomes a dorm president just to get closer to him.
The delinquent tries to rebel against him and tries to find out what he jerks off to in the middle of the night so he follows him in to the bathroom, only to find him masturbating to a picture of him when he was younger, in exchanse for that pictures the delinquent gives the dorm president a handjob.
Jigoku no Sata mo Yokume Shidai