University employee Sagami has long nursed a quiet admiration for Mochida, a kind and gentle senior colleague. His routine of polite greetings and stolen glances takes a sharp turn when Oomiya, Mochida’s blunt and domineering coworker, asks him a loaded question: does he want to know what truly makes Mochida happy? Sagami is promptly appointed as the designated person to carry out erotic teasing and playful mischief on Mochida, all under Oomiya’s guidance and often with her direct participation. What begins as a secret arrangement soon evolves into a private triangular relationship, with both women gradually drawing Sagami deeper into a hidden world of affection, power games, and shared vulnerability. Set against the mundane backdrop of university office life, the story follows this adult love comedy as each character’s genuine feelings begin to surface, complicating the original agreement. As Sagami’s bond with Mochida deepens and Oomiya’s own emotions awaken, the delicate balance of their secret relationship faces new tests and evolving dynamics.