As a transferred employee, Ito, who came as her supervisor, turns out to be her ex-boyfriend who they had a bitter breakup with?! Kasahara, who regretted unilaterally breaking up with him, couldn't help but feel awkward despite their destined reunion. However, as they spent time together, it brought back the excitement they felt back then... During a late-night overtime session, as they reminisced about old times, they realized their feelings were still the same...
