After living away from home in a dorm, Akira's student life was coming to an end as he faced graduation day. On his way home with classmates, a woman approached from across the street, smiling and waving. It was his stepmother, Honoka, who had secretly come to celebrate him. "Today is your special day," she said joyfully, her intoxication rising until she nearly lost consciousness. Akira, who had secretly admired her since they lived together, felt overwhelming desire seeing her vulnerable state. He managed to get her to a hotel. The atmosphere and tension between them deepened the unfolding story.