Suzuki, a university student, has just gotten his first girlfriend. Although Suzuki is a shy person, he decides to confess his feelings and his feelings come to fruition. Himari, the girl he is with, is also a quiet and innocent girl...or so he thought. On the day Suzuki first comes to his house, Himari starts having sex with a neighborhood old man right in front of Suzuki, as if it were the most natural thing in the world. Suzuki is shocked by the sight, but from then on, he is at the mercy of Himari, who seems to have no sense of chastity...