Yuna has been married to her husband, who works at the same company, for 10 years. Her husband was having an affair with a subordinate at his company, and the relationship between the couple was strained. One day, Yuna, who can only console her womanly body, shows up when her former colleague Oshima appears. The two, who were like friends, shared old stories, sympathized with each other's circumstances, and pressed their lips and skin together as if to compensate for their loneliness. And then, in a room with a broken air conditioner, they drown in obscene sixty-nine copulation, with only the sounds of sweat and sipping on each other...
