Masana Fujisaki balances medical studies with modeling. A chance club encounter reunites her with Kazushi Kubota, her junior high first love, shortly after her long-term relationship ends. Her natural confidence drives her to take initiative when Kubota hesitates in advancing their romance. Through multiple encounters, she demonstrates agency by approaching him after noticing his dejection and exchanging contact information. She defends her ex-boyfriend against warnings, revealing complex feelings about their past. The narrative traces their escalating romantic involvement toward a pivotal moment exploring physical intimacy.