Yayoi lives a happy life with her family.
But for a long while she's been in a sexless marriage.

One day her husband brings home some coworkers.
They take an instant like to the smoldering, neglected womanhood of Yayoi. As her husband gets drunk, his coworkers creep up on her... But it doesn't end with that one disgraceful event. Now she's got to keep that indiscretion secret... by continuing to sleep with the men or else they'll ruin everything!

[from DLsite English]