Kakugo wo Kimete  

カクゴをきめて

Tetsu's father is the head of a Yakuza gang. He longs for a romantic relationship but finds someone who matches his preferences in Senou. However, Senou makes his living through fraudulent activities and tries to pressure Tetsu into producing an adult video. Despite this, their love story develops into a passionate and open one. Additionally, the narrative includes Tomoki's friendship with Sahara, his mathematics teacher.