ドメスティックな彼女

Natsuo Fujii is quietly in love with his teacher, Hina Tachibana. Trying to move past it, he goes to a group date and meets Rui Tachibana, a blunt girl his own age he has never met before, who asks him for a no-strings encounter just to know what it feels like. Soon after, Natsuo's widowed father announces he is remarrying, and his new wife's two daughters turn out to be Hina and Rui, who move in under the same roof. Natsuo now lives with both the teacher he pines for and the girl he slept with.