Sumire who came to a certain hot spring inn with her beloved husband, Yuji, without entering the couple. A wife who is working hard to raise her children and a husband who is working hard. It was a trip to appreciate each other's efforts, but Sumire was planning to do something. It is "sex in a couple". Sumire was trying to get Yuji to do anything to regain the relationship of the couple who had become sexless before he knew it. And as soon as I arrived at the inn, Sumire's "temptation" began.