Oyama, a subordinate who missed the last train and ended up staying at his boss Ichi Kawai's house, was greeted by Kaori, Ichi Kawai's wife. Kaori, with her voluptuous body, teased the timid Oyama playfully. Struggling to sleep due to her seductive techniques, Oyama couldn't resist peeking into the couple's bedroom, where Kaori was performing a self-pleasure act, drawing him in. Surprised, Oyama watched as Kaori, completely disregarding her sleeping husband beside her, toyed with his manhood, thoroughly enjoying the intense pleasure of the young man.