Sakura Kawaguchi is a cheeky and bossy junior childhood friend. An unexpected five-day cohabitation begins with her. At first, the two are repulsed by each other, but the heat of their skin touching in the small room gradually changes the atmosphere. "I'm not interested in you," she says stubbornly, but the moment he penetrates her, her eyes get hot and moist, and her tsundere nature crumbles with pleasure. Five intense days of her youthful body in motion, deepening their love behind closed doors.