Class no Daikirai na Joshi to Kekkon suru Koto ni Natta.

There is nobody Saito Houjou dislikes more than his classmate Akane Sakuramori; almost every conversation between them becomes an argument. Marriage seems unthinkable, until his grandfather and her grandmother bring the families together and insist that the two wed for reasons of their own.

Forced to accept, Saito and Akane move into the same house while trying to keep their marriage secret at school. Living together exposes sides of each other that constant fighting had hidden: small habits, private weaknesses, and moments when relying on the person they supposedly hate becomes surprisingly natural. Their hostility does not vanish overnight, but it gradually stops being the only feeling between them.