Due to company downsizing, Kotaro and Hideto were told that one of them had to be laid off. Considering that Hideto had just gotten married and purchased a home, single Kotaro chose to resign voluntarily. The two men silently vowed, "I'll repay you someday." Six months later, Kotaro—now working as a tour bus driver in his hometown—comes to Tokyo and returns to Rinako. Emotions stirred upon seeing her again, and taking advantage of Hideto's absence, Kotaro makes a move on her. Remembering the debt of gratitude she owes him, Rinako finds herself unable to resist, and the two end up in bed together.