Sei, a married woman, has not had sex for a while since her husband was promoted and has become busy at work. Perhaps because she is at an age where her sexual desire is increasing, her body has become a little sensitive recently... One day, her husband brings her subordinate, Hosoda, to their home. Hijiri Sei entertains the two as they have a drink in the evening, but in the process, she accidentally rubs her nipples and moans... When Hosoda sees his boss drunk, he is influenced by alcohol and is annoyed with his boss, so he starts to develop Sei's nipples...