As a department manager, Sugiura struggles with loneliness and desperation, having lost the trust of his colleagues due to repeated mistakes and facing rumors of imminent dismissal. The only person who has supported him is his subordinate, Risa. However, when he notices Risa growing close to the younger coworker, Watanabe, Sugiura is overwhelmed by a crushing sense of dread. The anxiety and desperation festering deep within him finally erupt, leading to a shocking turn of events—attacking Risa while she's working late.