“Renjo-kun, I want you to become my fiancé.”

Toru Renjo saves Aino Lyuti, the rumored most beautiful Nordic girl in school, at a bookstore and is asked to become her fiancé.

Initially, it was a request to avoid an arranged marriage, but upon learning that Toru is her intended partner, Aino suddenly becomes enthusiastic about the engagement…!?

This is the story of two people, originally bound by a sham engagement, who gradually come to understand each other and grow into true lovers.