Inu mo Hashitte Koi wo suru

A graduate student named Atsushi moves in with his boyfriend Yoritomo to complete his thesis. Yoritomo, who enjoys playful and suggestive thoughts, begins considering ways to take advantage of their shared living situation. However, Yoritomo's brother Katsuyori unexpectedly arrives, causing complications for Atsushi. A separate story also follows Atsushi's friend as they attempt to seduce Katsuyori.