After missing the last train due to a company drinking party, the new employee Chibana, takes advantage of her boss's wife being away at her parents' house and crashes at his place. She falls asleep as soon as she arrives, so he teases her a bit, but unable to resist any longer, he ends up inserting himself into her without her waking up. Days later, when Chibana unexpectedly shows up at his place on her day off, she threatens him about "that night," and the innocent new employee ends up being toyed with by her!
