High school student Naegi Toshiya one day happens to witness his girlfriend Tsukimiya Airi and his classmate and best friend Nakajo Shintaro coming out of a love hotel.... more>>

Toshiya can't hide his shock at being cheated on.

At that moment, the one who appeared before Toshiya was Rinka, a younger girl who was also Shintaro's sister.

「Senpai, would you like to try cheating with me?」

What she proposed was a revenge plan──to cheat in return and give them the same pain.

Though Toshiya initially refused, he couldn't keep turning down Rinka's aggressive advances, and eventually they ended up in such a deep relationship that there was no turning back...?

A forbidden "revenge cheating" romantic comedy between "me", who had his girlfriend stolen, and a yandere kohai beauty, begins here! <<less