Taninbou de Ikikurui Kairaku ni Oboreteiku Saiaizuma - Misetsukerareta Kairaku ni Zecchou Suru Tsuma no Chitai | 他人棒でイキ狂い快楽に溺れていく最愛妻 ～見せつけられた快楽に絶頂する妻の痴態

The protagonist, Kazumi Tsukayama, had a loving wife, Kazunari Tsukayama. In college, Kazumi was a member of a club that was all about getting laid and playing around with women. After meeting Kazunari, I stopped clubbing and playing with women, and continued to love only her.

But after a few years of marriage to Kazunari, they were living happily ever after. I saw a news story about a group of women who were having sexual problems with a number of women in a circle they once belonged to. Ichimi, who was already estranged from his circle at the time, was afraid of what his wife would think if she knew about his past.

One day, while living in such a day-to-day life, Kazumi is visited by a man he knew from her college days, Toshio, who is a friend of Kazumi. Kazumi is very happy to see him. He hands me a single USB memory stick, telling me that he knows that Kazumi was a member of that circle. The file showed an old image of Kazunari and Toshio embracing. When questioned, Toshio admits that he used to date Kazunari. The fact that the man appears before him now makes him wary, thinking that he has come to take revenge against Kazunari for taking her away from him. And around Kazumi, something was gradually changing - and it was a change of scenery.