Twenty-year-old Kouta works at a local guest house, and when a new part-timer joins the staff, he’s mortified to learn it’s someone he never thought he’d see again—his junior high classmate, Chizuru. Not only do these two share a past, they’ve shared a kiss, albeit one that only happened because of a “punishment game.” Thanks to that, Kouta assumes Chizuru wants nothing to do with him. Yet the moment these two former classmates are alone together, Chizuru kisses Kouta again, then confesses he took the job just to be with him! Is this another cruel prank, or a chance to start over?