[Aimaitei (Aimaitei Umami)] Yurio ga Onsen de Yu Atari Shite Mob Oji-san-tachi ni Ecchi na Kaihou o Shite Moratta Toki no Hanashi (Yuri on Ice) [Digital]
[Studio Q (Natsuka Q-Ya)] Tama-nee to Onsen!! (ToHeart2)
[Go Fujimoto] Cruisin' the Onsen[Eng]
Mitsuko's Experience as a Milk Cow
[Kamemushi (Kaminaru Fuyu)] Syokusyu Onsen [Digital]
(C84) [Kyourakuen (Aku)] Yami-chan no Wakuwaku Onsen Tengoku (To LOVE-Ru)
[Circle Eden (Diisuke)] Dopyu! Marugoto Ninshin Shojyo darake no Konyoku Onsen (Touhou Project) [English] {doujins.com} [Digital]
[Mamezou] Oji-san ga Oji-san ni Nattara | When an Uncle Becomes an Old Man (Anal wa Sex ni Hairimasu ka?) [English] [DMD]
(CR26) [Furaipan Daimaou (Various)] Poka-poka Onsen (Love Hina)
(Mou Nanimo Kowakunai 24) [KATAMARI-YA (Shinama)] MadoHomu no Yu Puella Magi Dosukebe Onsen Gaiden (Puella Magi Madoka☆Magica)
(C70) [Naruho-dou (Naruhodo)] Kibun wa mou Onsen | Feels like Hot Springs (Naruto) [English] [SaHa]
(Kouroumu 10) [Cat Expert (Nekousa)] Chen to Issho -Onsen mo Issho- (Touhou Project)
[Nonsense (em)] One/stay night (Fate/stay night)
Dopyu! Marugoto Ninshin Shojyo darake no Konyoku Onsen
(C92) [KONOHA (Hotei Kazuha)] Usagi Onsen (THE IDOLM@STER CINDERELLA GIRLS)
(CCTokyo142) [Pometeror (Enotou)] Rakuen Kikou ~Superbia Onsen Hen~ (Xenoblade Chronicles 2)
Yokubou Kaiki Dai 291 Shou -Full Ero Panic! Eroffu Onsen Ryokan Yobai Hen + Alpha-
Zettai Junpaku Maho Shojo Motto Onsen Doko-kai de Ikou !
(C88) [SSB (Maririn)] Shinjin Mahjong Idol Nodocchi Sanpaku Yokka Chaku Ero Onsen Makura Eigyou (Saki)
[Tenma Femio] Yokkyuu Fuman no Hitozuma wa Onsen Ryokan de Hageshiku Modaeru 01-14 [Digital]
DLsite Girl's Maniax Anthology vol.4
(C77) [TNC. (Lunch)] Onsen Tamamagoto (THE iDOLM@STER) [English] [SaHa]
Raphael to no Onsen Shippori
Takagaki Kaede no Konyoku Onsen Hitoritabi Bon | Kaede's Mixed Bathing Hot Springs Solo Adventure
[Rokumonsen (Tamahagane)] Roshutsu Shoujo Itan 9 Hen [Chinese] [朔夜汉化] [Digital]
[Higuma-ya (Nora Higuma)] Konyoku Onsen de Toshiue no Onee-san ni Ippai Shasei Sasete Morau Hanashi | 比我年長的大姊姊在混浴溫泉裡讓我盡情射精的故事 [Chinese] [漢化組漢化組]
(C72) [Rengaworks (Renga)] Ikaho Onsen Monogatari (Lucky Star)
[Smokin’ Sick Style (Rokumonsen Kako)] Jikuu no Hazama no Homura-san | Homura-san’s Space-Time Loophole (Puella Magi Madoka Magica) [English]
Mao-chan to Onsen Ryokou ni Iku Hon | A book about going on an onsen trip with Mallow-chan
(C93) [IMAKAN (Keigen Asuka)] Konyoku Onsen Chihayu (THE iDOLM@STER) [Chinese] [脸肿汉化组]
(Osake ni Shimasu? Onsen ni Shimasu? Soretomo, Wa.Ta.Shi?) [Torotorotorocco (Johnny)] Kimi ni You (THE IDOLM@STER CINDERELLA GIRLS)
(C83) [Desuno!! (Fuyuwa Kotatsu)] Moriya-san-chi no Onsen Jijou (Touhou Project) [English] [CGrascal]
[Tenma Femio] Yokkyuu Fuman no Hitozuma wa Onsen Ryokan de Hageshiku Modaeru 01-13 [Digital]
(C82) [Nonsense (em)] BLUE ECLIPSE (Fate/stay night)
(C88) [Melitta, Nonsence (Asamachi Nori, Yue)] Okaeri! Power-up Shokushu-chan (Haikyuu!!)
Blonde Shinigami Onsen Scene 3
[Eruapo Gundan (Kurabayashi)] Inran Chie-chan Onsen Daisakusen! 3 (Persona 4) [Digital]
(Shoku no Kyouen 2) [ACCEL PLUS (Yamori)] Souda Onsen, Ikou. (Tokyo Ghoul)
(Reitaisai 12) [NERCO (Koikawa Minoru)] Hatate in Tennen Onsen | Hatate in Natural Hot Spring (Touhou Project) [English]
Moriya-san-chi no Onsen Jijou
[Wisteria (Fujihan)] Oichin [Digital]
[Handsome Aniki (Asuhiro)] Otoko wa Ookami nano yo | Men are wolves (K-ON!) [English] [Uncle Bane]
[Aoi Hitori] Hitozuma Kanochi Onsen
[Shiki Takuto] Namaiki JK Onsen Ryokou 2-haku 3-kka | Cheeky JK Hot Springs Trip - Two Days One Night (COMIC Mugen Tensei 2017-10) [English] [Yuzuru Katsuragi] [Digital]
[Uncle Sam] Itoshi no Virgin VOICE
(C89) [Eroliya (iuro)] Kyoudai Onsen + Oshioki ESCALATION (Eroliya 2015-WINTER 14) [English]
(Reitaisai 11) [Tonpuuratei (Saemon)] Iku-san to Onsen de Ichaicha Shitai!! | I Want to Flirt With Iku-san at the Hot Spring!! (Touhou Project) [English] {doujin-moe.us}
Anthology - Shemale Collection 1
[Yu-zyenixi] The Story Of An Uncle Who Was Taken To A World Where Childbirth Is Compulsory Education Because The Declining Birthrate And Aging Populations Became Too Serious 2 [English] [MTL]
[Hakata Ramen] Yarippa-Knight — Onsen Adventure no Maki (Yarukkya Knight)
(C92) [Takoyaki-batake (Takoyaki Yoshi)] Ro-chan to Onsen Ryokan de Shippori to de Sutte (Kantai Collection -KanColle-)
[Masamune Kokichi (Matsu Takeshi)] Oi Oji!! ~Oi ga Tawawa ni Minottaseide~ | ~Nephew and Old man!~ [English] [Digital]
(Reitaisai 12) [Kuma-tan Flash! (Satetsu)] Oji-san of Scroll | Uncle of the Scrolls (Gensoukyou ni Tanetsuke Oji-san ga Yattekita YA-YA-YA) (Touhou Project) [English]
Hamaru! Aya Onee-san to Shittori Onsen X
(Shota Scratch 24) [NOTONE (fk696, Nekotasou)] Mihattatsu Shounen | Undeveloped Boys [English] [alparslan]
[Wakamiya Santa] Noroware TS Queen (Nyotaika Ryoujoku!!) [Chinese] [瑞树汉化组] [Digital]
[Amahara Teikoku (Amahara)] Teisou Gyakuten Sekai Konyoku Onsen [English] [SMDC] [Digital]
Booberty
[Puyo] Kaikou Onsen | The Hot Spring of Encounter [English] [Kusanyagi]
Onsen Ryokan de Harem Square
Boku ha Musekinin Ojisan | My Irresponsible Uncle