(C61) [Naniwa Onsen Tamago Kumiai (Katsumi Kouichi)] G's style Type-Imouto III (Sister Princess)
Akagi Onsen Dosukebe Ryokou
[AKABEi SOFT (Alpha)] Leona, Hajimete (King of Fighters)
Onsen Ryokan de Harem Square
(CCOsaka92) [Mochimochitaiyo (Morita Mochikichi)] Ore to Anta no Naishogoto (Rune Factory 4)
(C88) [S.S.L (Yanagi)] Rider-san to Onsen Yado. Sonogo | Hot Spring Inn With Rider-san. After Story (Fate/stay night) [English] [Facedesk]
[Shinchara (YO-JIN)] B:CLA Nagisa Rinkan Ryoujoku Onsen (Clannad) [Digital]
(C82) [UNKY (Unko Yoshida)] ONE HUNDRED SLAPPING (speechless) (Tiger & Bunny) [English] [Leon + Amyused]
(Shota Scratch 33) [Kimagu Restaurant (Kimagu)] Maid no Leon-kun
[G500 (Onsen Nakaya)] KISSxSHOT (Bakemonogatari) [Digital]
Hitozuma o Onsen Ryokou de Karimakutta
[Salmon Daisuki Club (Done)] Yuruyuru Hatsujou Onsen [Digital]
[Crimson Comics (Crimson)] Shinyuu no Kareshi ni Okasareta Watashi ~Onsen Ryokan Hen~ [Chinese]
(C91) [Engoutenma (yuto)] Twintail Onsen de Taiganjouju (Ore, Twintail ni Narimasu.)
(C83) [TwinBox (Sousouman, Hanahanamaki)] Aisai to Onsen Ryoko (Sword Art Online)
Azunyan to Onsen Itte Ichaicha Suru
A Trip to the Hot Springs with My Beloved
[Nishida Megane] Aijin Keiyaku Onsen Ryokou (Hitozuma Joushi wa Cosplay Dorei) [Chinese] [Digital]
[G500 (Onsen Nakaya)] SHINOBUFISHING (Bakemonogatari) [Digital]
[Tenma Femio] Yokkyuu Fuman no Hitozuma wa Onsen Ryokan de Hageshiku Modaeru 01-20 [Digital]
(C93) [Moe Hime Rengou (xin, obiwan)] FGO Carnival 13 Onsen Ecchi Heaven's Feel (Fate/Grand Order)
(C89) [Kakumei Seifu Kouhoushitsu (Various)] Dosukebe Harvin Puniana Tou (Granblue Fantasy)
[Mavis] Mei Onsen Hen (Houkai Gakuen) [Chinese]
Seikishichou Leon
[Lunch] Onsen Satisfaction (Comic Megastore 2009-05) [English] {Sandwhale} [Decensored]
[Hidemaru] Zokkon! Boin Onsen | Boing Boing Onsen Vol. 2 [English] {Tadanohito}
[Sugareya Shouten (Sugaleon)] Watashi no Jiman no Onee-chan [Digital]
Reon to Onsen
[Aranaga Hikaru] Mahou Neko Leon | Leon the Magic Cat (Shounen Ai no Bigaku 02 The Yancha Shounen) [English]
(C89) [Tekokids (Leonardo 16sei)] Aldora-tan no Okozukai Kasegi (Granblue Fantasy)
(C90) [Inyu-goya (Inyucchi)] Kasshoku Musume wa Onsen demo Sekkyokuteki (Kantai Collection -KanColle-) [Chinese] [CE家族社]
Koi no Kyoukasho
(C93) [MOUSOUDOKE (Iwasaki Takashi)] Takagaki Kaede no Konyoku Onsen Hitoritabi Bon + C93 Omake Bon (THE IDOLM@STER CINDERELLA GIRLS, Fate/Grand Order) [Chinese] [有毒氣漢化組]
[Kuroiwa Menou] Iyashi no Onsen Ryokan Omokage | Soothing Hot Spring Resort Omokage (Manga Bangaichi 2014-05) [English] [SaHa]
(CSP5) [Korisuya (Korisu)] Onsen Hitoduma H (Original)
[Eruapo Gundan (Kurabayashi)] Inran Chie-chan Onsen Daisakusen! 1 (Persona 4)
(C94) [GreenHouse (Uno Ryoku)] Kaihouteki Onsen Abby (Fate/Grand Order) [Chinese] [CE家族社]
(C92) [Takoyaki-batake (Takoyaki Yoshi)] Ro-chan to Onsen Ryokan de Shippori to de Sutte (Kantai Collection -KanColle-)
(COMIC1☆14) [Bakuhatsu Market (Minato Akira)] Kishin no Koigokoro ~ Onsen Ryokou Hen (Azur Lane)
Yume no Atosaki
[Maomi Leon, uroco] Souryo to Majiwaru Shikiyoku no Yoru ni... 3
[Parupunte (Fukada Takushi) midaredzuma 3 Shimazu Miyuki (27)~ kodakara onsen 2-paku 3-nichi ~
[Pyramid House (Muscleman)] Onsen Jijii VS Bulma | Hot Spring Geezers VS Bulma (Dragon Ball) [English] {doujin-moe.us}
(C83) [Circle Eden (Diisuke)] Onsen de Boin-Boin Aneki-tachi ni Bokki wo Misetsukeru Hon (Touhou Project)
Cruisin' the Onsen
(C91) [Tsuki no Uragawa (Romi)] Kanade-san, Onsen ni Issho ni Hairimasenka (THE iDOLM@STER CINDERELLA GIRLS) [Chinese] [UAl汉化组]
[Colt (LEE)] KemoMimi Onsen e Youkoso Ver1.1 [Chinese] [无毒汉化组X無邪気漢化組] [Digital]
Yami-chan no Wakuwaku Onsen Tengoku
Nenmaku Communication
[otochilu Cafe (Kuroda Nichiru,Izumiya Otoha)] Futari no Dokidoki Onsen Ryokou (Kara no Kyoukai)
(Shota Scratch 33) [Kimagu Restaurant (Kimagu)] Maid no Leon-kun [English] [Prettyboy]
(Reitaisai 8) [Ryokucha Combo (Chameleon)] Pachu Minkan (Touhou Project)
[Yokazetei (Narukami Ginryu)] Murasame to Onsen Ryokan (Kantai Collection -KanColle-) [Digital]
(C85) [bolze. (rit.)] Mizugi Onsen Kai wo Usui hon de Kaizan shitemiru (Gundam Build Fighters)
Answer
Tsuyomari Majokko Sweet Leona
[KENIX (Ninnin!)] Get the Sword Named "Soul Edge" (Soulcalibur)
ボクラノ日常
[yogurt (bifidus)] Kouhai Tanetsuke Onsen - Nishimura Yuki-chan ni Marking [Digital]
A trip to the Hyuga Onsen
[Muchakai (Mucha)] Chii-chan Kaihatsu Nikki Bangai "Onsen Swapping" Hen [Chinese] [無邪気漢化組]
[Kleitos (Ryunosuke)] Sawa-chan to Kissuisou Ittari Onsen Haittari (TARI TARI, Hanasaku Iroha) [Digital]
Paru-chan to issho
[Hidemaru] Zokkon! Boin Onsen Vol 3
[Nihon Dandy (Matsuno Susumu)] Dokidoki! Hikyou Onsen | Dokidoki! Secluded Hot Spring [English] [Digital]
JAPANESE ONSEN AMAZING!
Shitsuji to meido wa otagai ni koikogarete tomarenai… hanaretakunai! | 执事与女仆的深深爱恋无法停止...不愿分离!
[Panda 4gou (Shimaki Yousuke)] Leon ga Uke na Hon (Quiz Magic Academy) [Digital]
[Kojima Miu] Nympho Maman Boshi Soukan - Mama no Shikyuu wa Boku no Mono Ch. 1-20 [English] [Fated Circle]
[Puyo] Kaikou Onsen | The Hot Spring of Encounter [English] [Kusanyagi]
[Nihon Dandy (Matsuno Susumu)] Dokidoki! Hikyou Onsen [Digital]
[G.to.Me! (Yamane Akira)] Kujira Box (Medaka Box)
(C95) [MacaronCrown (Haruruyuco)] Ippai Chiyuki ~Onsen Hen~ (THE iDOLM@STER: Shiny Colors)
[You You Tsuushin (Shinonome Yuu)] Nanami-chan to Onsen Ryokou
Kiana OnsenJiken | Kiana's Onsen Incident
[TAMA] Gekisatsu! Zukobako Onsen (Comic G-men Gaho No. 03)
(C92) [Kohakutei (Sakai Hamachi)] Hitozuma Iemoto o Onsen Ryokou ni Tsuredashite Konyoku Roten Buro de Nakadashi Shitemimashita (Girls und Panzer)
[Tsujigiri Onsen] Onyoku Burabura Shounen Bibouroku 4
Sono Tengu Kanojo ni Tsuki - Koi no Biyaku to Onsen to
[Haekake] Boro Onsen nite Haekake 3-nengo [chinese] [sunstory漢化組]
Oshiego to kōbi mokuteki no onsen ryokōniiku-banashi
Yoshi & Charmeleon
JC na Shoujo no Ehon
Hin-nyu v36 - Hin-nyu Onsen
Ryoujoku Onsen -Oyakodon-
[Eruapo Gundan (Kurabayashi)] Inran Chie-chan Onsen Daisakusen! 2 (Persona 4) [Digital]
(Ryonaket 3) [Sugareya Shouten (Sugaleon)] Jinki Tsukai Sousaku Houkokusho (GOD EATER)
(HaruCC19) [Nonsense (em)] Alternative Gray (Fate/stay night, Fate/hollow ataraxia)
Ada Wong no Irojikake Kanseiban
Izuna no Hon Sono 2 Onsen ni Iku no Maki
[Amazake Hatosyo-ten (Yoshu Ohepe)] Batsuichi Body Shinobu-san Onsen Ryokou de Ippaku Hen [Digital]
(C82) [Inyu-goya (Inyucchi)] Moriya Onsen Monogatari (Touhou Project)
[Metabocafe Offensive Smell Uproar (Itachou)] Lyrical Onsen (Mahou Shoujo Lyrical Nanoha)
[Rokumonsen (Tamahagane)] Roshutsu Shoujo Itan Jyuuichi Hen [English] [ATF] [Digital]
Ore to Anta no Naishogoto | Me and You's Secret
(C90) [Churara (Nakano)] Dorothy to Leona no Love Love Futago Ecchi (PriPara)
Aidol o Torimodose! ~Sophie x Leona Hen~
[Rokumonsen (Tamahagane)] Roshutsu Shoujo Itan 8 Hen [English] [ATF] [Digital]
[Nonsense (em)] One/stay night (Fate/stay night) [Chinese] [wl00314824個人漢化]
[Aoi Hitori] Hitozuma Kanochi Onsen Ch. 1-3
[Shinchintaisha Company (Satou Takahiro)] Soul of Darkness (SOULCALIBUR)
Souda Onsen de Yarou
[Circle Eden (Diisuke)] Onsen de Boin-Boin Aneki-tachi ni Bokki o Misetsukeru Hon (Touhou Project) [Digital]
(C86) [Milkshake Work (Milkshake)] Dai Roku Kuchiku Onsen Yokujou (Kantai Collection -KanColle-) [Chinese] [CE家族社]
Kono Onsen wa Mugen no Niku de Dekite iru
Mao-chan to Onsen Ryokou ni Iku Hon | A book about going on an onsen trip with Mallow-chan
Plus Pink
Hold My Hand