My brother's victim was my first love. Daisuke's older brother, Takashi, had no steady job and spent his days loafing around, extorting money from Daisuke. His depraved hobby was to lure female insurance agents to his home and force them into sex. His next target was none other than Daisuke's former teacher from his school days and his first love, Mina, who had since become an insurance agent... By chance, Daisuke witnessed his brother and Mina having sex...