Horny high-schooler Komori Yuuichi, left stranded as his best friend has got a boyfriend, finds a new confident in Wakana Haruto, a university student part-timing at the bookstore he frequents.

Beautiful and popular Nakatani Hiyori has fallen in love with his dormitory roommate and underclassmen Amano Kasumi. But being in the same room with the one you love day in and day out is a strain. From here...