Tonight, I'm alone with my wife's friend...

Yuko is drinking wine at her friend Emi's house from her school days to celebrate her reunion after a long time. Then Emi's husband, Masanori, returns home from work. Her elegant and cute face, her cleavage makes you want to immerse her face, and her narrow waist to her hips... Masanori fell in love with Yuko, which is so beautiful that it is incomparable to her wife. He somehow tries to suppress his sexual impulses with rationality, but he sees a certain sight...