Akira is in love with his stepmother, Shiori. Although she is his stepmother, Akira keeps his feelings to himself, but he can't suppress his Kokoro and secretly films Shiori. Then, he finds a video of Shiori masturbating. Akira makes excuses in a hurry, but Shiori, seeing Akira like that, tries to kiss him. Aki returns the kiss in a frenzy. Then the two of them get naked...