Hitozuma Circle ~Otto wa Aishiteru Kedo Moteamashita Seiyoku wa Kaishou Shitai~

I love my husband.

But he's so busy he rarely pays me any attention, and my sexual desire just keeps building.

So these married women got together and formed a “Circle to Satisfy Sexual Desires Without Cheating.”

The chosen “pole man” is the protagonist (a virgin) who's known one of the wives since childhood.

Set in the heroine's home while her husband is away, at hot spring trips, and at event venues, they enjoy different scenarios with each wife.

Using his youth as a weapon, he has endless sex with these wives who reveal hidden sexual preferences they couldn't tell their husbands.

[From official site]