Takashi and Yosuke arrive at their long-admired aunt Yukiko's house, finally meeting the day they've been waiting for. The moment they arrive, an unexpected sight unfolds before their eyes—Yukiko, lost in pleasure, standing naked and indulging in a lewd act of masturbation. Seeing their aunt like this for the first time sends their hearts racing, overwhelming them with uncontrollable excitement. Frozen in place, the two eventually give in to their desires and move closer to Yukiko. In that instant, a new chapter begins.