Hiroyuki was receiving a sudden visit from Yui No. His wife went on a two-day, one-night trip with a friend, and he thought he would be able to enjoy being alone for the first time in a while... but the intercom rang and Yui came into the house. Hiroyuki was surprised, but he was completely attached to Yui, who took care of all the housework. He had no idea that Yui No real purpose was to release her sexual desire... Yui sent him off with a seductive smile as he went to take a bath, and began to take off her own clothes...