Natsuo loses his virginity. His partner? Her name is Rui and he just
met her today after school. She's the one that brought up this whole
situation, stating that she wanted to simply gain the knowledge about
sex. She does not want to start a relationship, nor does she care about
Natsuo. Afterwards, Natsuo feels guilty for losing his virginity to a
girl he doesn't even particularly like. Mostly, it makes him feel like
he betrayed his crush to his high school teacher: Hina. A quirky love
triangle story unfolds as Natsuo, Rui, and Hina all end up becoming part
of the same family!
Our main character has a pretty big crush on one of his teachers. So
much so when he later meets a girl that looks a lot like his crush he
immediately accepts her advances. Later he is shocked to find out his
crush will be moving in with him due to a marriage arrangement his
father entered into, but that isn't the only surprise. That girl he had
previously met and his crush are actually sisters and she will be moving in too!