Yosuke is hospitalized after a traffic accident. His father, a single parent overwhelmed by work, divorced Yosuke's mother long ago. Even when his father visits, they barely speak. However, Kaori, the nurse who helps Yosuke with his rehabilitation, gradually eases the tension between them. Yosuke begins developing feelings for her and slowly opens up. One day, he's shocked to hear that his father is marrying Kaori, and he runs out of the hospital in despair. Later, he discovers the two secretly meeting in an examination room. Shaken to his core, Yosuke introduces Kaori to his friends, turning her into an easily accessible nurse for them to sleep with. As a result, their relationships grow increasingly complicated.