Chizuru left her job as a teacher and became a married woman, and Isejima graduated from school and worked for a security company. Even though they were once a teacher and a student, they made a one-time mistake. A few years later, Chizuru moved next door to Iseshima, and they met again by chance. While hiding their turmoil, the two began to remember each other as the opposite sex as memories of the past revived. In the past, the relationship that was
