A married woman who obtained a backup key, and her solitary apartment where she had sex with a male student until graduation. Akari Tsumugi JUQ-541

Because her husband was ignoring her, Tsumugi went drinking with her girlfriend at an izakaya (Japanese pub). But perhaps because she was drunk, she got involved with Shinji, a student sitting next to her... Embarrassed, she didn't contact him afterwards. However, after a chance encounter with Shinji on the street, Tsumugi developed a relationship with him. Then, Tsumugi got a spare key to her room from Shinji and began to look forward to using it to wait for him to come home, becoming increasingly excited. Because she knew that once he returned, she would once again be entangled with this young and energetic man...