After the usual morning commotion involving Rito falling foul of Lala's inventions, accidentally tackling Haruna, being tackled in turn by Run who has now fallen in love with Rito after the kiss they shared while she was Ren and Saki trying to steal Rito away to once again proving her superiority, a fellow school student, Yui Kotegawa has had enough of the "ecchi" in the school. Not only does she try to clean it up, but she forms a squad to enforce new school rules and to check on the students' behavior. Yui believes that Rito is behind all the "ecchi" in school and forbids him from talking to any girl for 2 weeks...