The bounds of Kaori's love for her husband are tested when he reveals that for his upcoming birthday, he'd like to act out a long-held fantasy of watching another man bang his wife in front of him. She doesn't understand what's so titillating about cuckoldry, but if it makes him happy...-FAKKU

Having gotten a taste of cuckoldry, Kaori's husband escalates his demands and asks her to record herself being propositioned for no-strings-attached sex at a bar. The innocent housewife ends up being taken home by two pickup artists and having her first threesome, complete with cosplay and sex toys!

Kaori hits it off with one of the men from her threesome a while ago, and when he asks her out on a date, she enthusiastically agrees - with her husband's permission, of course. But Ryoya thinks they might be getting a bit too close...

The ménage à trois between Kaori, Ryoya, and Tomoki is getting complicated, and she decides to come clean to her lover about her relationship status. At the same time, the demure Kaori is starting to show her husband a much more dominating side in the bedroom...

Ryoya and Kaori's friend with benefits Yamamoto extends them an invitation to a hot spring resort that he's the owner of. They're happy to accept, with Tomoki coming along for the fun too. But between a free-for-all in the mixed bath and a gangbang after experimenting with her other hole, Kaori find herself being pushed to her limits.

Ryoya’s coworker Yu Okada has a girlfriend, but his performance anxiety has caused him to avoid any sexual encounters with her, leading to him remaining a virgin well into young adulthood. When Ryoya catches wind of this fact, he asks Yu to participate in his cucking fantasies by letting his beautiful wife Kaori gently ease him into his first time. Kaori’s still cautious after what happened with Tomoki, but a man who’s spoken for is all the better for a one-time fling, so she’s willing to give it a try. Plus, she’s developed a taste for virgins after her last escapade at the hot spring…(Includes an alternate version of the volume narrated from Kaori’s P.O.V.)