Mucha furi kaika-chû: Uwaki musume to hoteri tsuma

むちゃ振り開花中 浮気っ娘と火照り妻 (original title)

Synopsis

Hanako, who works at a girls' bar, is having an affair with a married man named Etsuo, who likes older men. When Etsuo's wife, Tomoe, notices her husband's affair, she suddenly shows up at Hanako's workplace and asks him to be her friend.