Details

Sayu, a new employee who missed the last train at a company drinking party, takes advantage of the fact that his wife is fighting and has gone back to her parents' house and comes to stay with him. As soon as he gets home, he plays a prank on Sayu, who has fallen asleep, but when she shows no signs of waking up, he can't resist and just inserts himself in her. Later, on a day off, Sayu suddenly comes over to play with him and threatens him about "that night," and he gets toyed with by this devilish new employee!