My brother violated my first love, Yukine Nagasaki (SAME-173).

Daisuke's older brother, Takashi, is unemployed and spends his time lounging around, always asking Daisuke for money. Takashi's twisted hobby is summoning female insurance agents to his home and forcibly having sex with them. His next target is none other than Mina, Daisuke's former homeroom teacher and first love, who has now become a life insurance agent… Daisuke accidentally witnesses his brother and Mina having sex…