From Promfret:
Sakuraba Kenji is an aspiring baseball player, however due to some circumstances he gave up on baseball, and moved to a new High School so that he is able to give up on it totally. On the day that he visit the new school he will be attending, he meets a girl, Mamiya Itsuka who mistakenly does something to him, causing him to faint. When he awakes, he realizes that the place he will be staying at is Itsuka's home!