A teacher falls in love with a cute student. While thinking of her as an important student, he can't help but notice her developed body and see her as a woman. When he sees a girl student being confessed to by a boy, something inside him snaps. Before he knows it, he's inserting his dick into the girl student's pussy in an empty library. From then on, he desires her body every day. The girl student also begins to let out sweet sighs.