Despite being a student preparing for exams, Gaku couldn't focus on his studies and was at his wits' end. He would constantly think about lewd things and couldn't return to studying until he had jerked off once. Gaku was tormented by these desires when his mother's close friend Yumi came to visit. Captivated by the alluring charm of the adult woman Yumi, Gaku neglected his studies and indulged in self-pleasure... but then Yumi came to check on him...
