Maki, who lives with her daughter and her husband, originally knew only ordinary SEX with a serious personality. But one day, she finds out that her daughter and her sexless son-in-law, Tetsuya, secretly called a nipple torture delivery health... Seeing that, she couldn't control the throbbing that erupted from the depths of her body, and she blamed his nipples, saying, "To mediate the couple's relationship." Tetsuya, who reacts like she's funny and bikunbikun, can't control her excitement.
