Domestic na Kanojo

Natsuo Fuji has a dirty little secret; ever since she found his fanfic on the school roof, he's begun to manifest a massive crush on his English teacher, Hina Tachibana. But unfortunately for Natsuo, what's even more massive is his complete lack of standards, opting to sleep with a girl, Rui Tachibana--who he meets for the first time at a mixer--because she looks oddly similar to Hina. The post-nut clarity hits Natsuo hard the next day, and he realizes that his actions have led him to betray the feelings he has for his teacher. As a result, the universe decides to punish him in the form of two new step-siblings! Hina, and Rui Tachibana. Domestic Girlfriend is a romantic drama, which relays the events after Natsuo's father's remarriage, and how Natsuo attempts to navigate the minefield of a taboo relationship. [Dankyskins]