Azusa, betrayed and heartbroken, discovers that her fiancé Nao has been cheating on her with his junior colleague Kirari, who's now pregnant. The engagement is called off, leaving Azusa in despair. Her comfort comes unexpectedly from her boss, Ousuke, who suddenly proposes an unconventional plan: "Use me to get your revenge." Caught between the anger and sadness of the betrayal and Ousuke's growing affection, Azusa hesitates but ultimately takes his hand.