Charai Hayama ni Kyun to Kitaチャラい羽山にきゅんときた ; 让我心动不已的轻浮学弟羽

From Summer Rain: Asahina, a member of the library committee is made to supervise her kouhai, Hayama, who is on probation for hooking up with a fellow student. As time passes, they become friends and maybe more...?