After moving to Tokyo, a young adult student discovers that his beautiful married neighbor also works at his part-time job. She looks after him because he resembles her childhood friend back home, but their growing closeness turns into an affair. Burdened by her husband's constant cheating, she eventually decides to divorce him and return to the countryside after realizing she still loves that old friend. This is the Episode Zero prequel to “Reunited with My Childhood Friend After Her Divorce—When I Confessed My Lifelong Love...”