Taeko's husband is caught in an affair, and she goes on a hot spring vacation to take her mind off her woes. When she meets a boy who's able to please her like her husband never could, one night just isn't enough, and a chance encounter develops into a long-lasting and passionate tryst... 
 
(Source: Fakku!) 
 
Note: A live-action AV adaptation (URE-062) was released on January 25th, 2021.

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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