Boss Ozawa’s pride got hurt after An Komatsu chose to marry a coworker instead of him. However, he wasn’t going to give up so easily.

My wife and I visited my wife's parents' house for the third anniversary of my father-in-law's death. Although it was a memorial service, we didn't actually go back to our parents' house, but my sister-in-law and her husband invited us on a casual trip home. However, our relationship has been getting cold lately... So, while I was bored at my parents' house, I couldn't help but stare at my sister-in-law An's defenseless pink nipples... Perhaps An noticed me, as she tempted me by showing me her loose chest...

Anzu is a slender woman who works at a mahjong parlor. One day, she plays mahjong with a man who has been brought to the parlor for the first time by his boss. Attracted by her kindness, the man starts to visit the parlor and the relationship gradually develops into an adult one. After playing strip mahjong, the two make love over and over again until the morning. What will become of their mahjong-like game of love?