Deisui Haitoku Onsen: Shufu Shinohara Yukie-san no Hiasobi

Yukie Shinohara, a housewife, decides to use a hot spring vacation as an opportunity to vent her sexual frustration by finding a boytoy to fool around with. However, once the drinks start pouring, she starts getting sloppy, and what started out as a bit of fun might end up being more than she bargained for.
(Source: Fakku!)
Note: A live-action AV adaptation (URE-080) was released on June 28, 2022.