A married woman who received a backup key, and her solitary apartment where she had sex with a male student until graduation. Ichika Hoshimiya JUR-353

Yuzuru and Ichika, a married woman, meet at a nearby izakaya (Japanese pub). They sit down for drinks together because Ichika is having relationship problems with her husband. From then on, they become close and eventually develop a physical relationship. Yuzuru gives Ichika a key to his house, and Ichika goes to Yuzuru's house with shopping bags while her husband goes to work. To alleviate the loneliness between the couple, she begins to spend intimate time in the rooms of younger men...