Enrenchuu no Toshishita Kanojo ga Onna ni Ueta Osuzaru-domo no Gakuen de Koubi Aite ni Sareteta.

Himezaki Naho entered a long-distance relationship with her boyfriend after he left for a university in another prefecture. In order to be with him, Naho decides to attend the same school as her boyfriend, which until the previous year had been an all-boys school with a dormitory and no female students. One day, two classmates visit Naho's room and invite her to study together, which she hesitantly agrees to.