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.

1. Kouhai Tanetsuke Onsen: Nishimura Yuki-chan ni Marking (後輩種付温泉～西村ユキちゃんにマーキング～) 
2. Kouhai Tanetsuke Onsen Gojitsudan: Nishimura Yuki-chan no Daigaku Seikatsu (後輩種付温泉 後日談~西村ユキちゃんの大学生活~) 
3. Marie-san to Onsen e: Otonari no Kyonyuu Onee-san to Kazokuburo de... (マリエさんと温泉へ～お隣の巨乳お姉さんと家族風呂で…～) 
4. Marie-san to Ofuroba de: Otonari no Kyonyuu Onee-san to no Amai Hibi... (マリエさんとお風呂場で～お隣の巨乳お姉さんとの甘い日々…～) 
5. Deisui Haitoku Onsen: Shufu Shinohara Yukie-san no Hiasobi (泥酔背徳温泉～主婦・篠原雪枝さんの火遊び～) 
6. Deisui Haitoku Onsen Gojitsudan: Shufu Shinohara Yukie-san no Atoshimatsu (泥酔背徳温泉 後日談~主婦・篠原雪枝さんの後始末~) 
7. Furin Takuran Onsen: Sakaki Taeko-san no Hinichijou (不倫托卵温泉～榊妙子さんの非日常～) 
8. Furin Takuran Onsen Gojitsudan: Sonogo no Taeko-san (不倫托卵温泉 後日談~その後の妙子さん〜) 
9. Seiai Onsen Kemono-tachi (性愛温泉の獣たち)

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