(C76) [Andore★JAPAN] Ero Nika Gakushuu Chou (Various)
COMIC HOTMILK 2017-04 [Digital]
[R-Koga] Osanai Mitsu
[Butaro] ブー太郎
[Digital Lover] Ninitan Ryoujoku Nikki
COMIC XO 2007-10 Vol. 17
COMIC Masyo 2019-04 [Digital]
Dandan Eyes (3x3 Eyes)
[R-Koga] VR Series [Digital]
in itinere
[R Koga] Tsukumimi 2
COMIC HOTMILK 2020-03
COMIC Masyo 2011-03
Surprise Meister KogaNue
[Koga Ryouhei] PrelfIllust No3 HighComics
COMIC Megastore Alpha 2014-07
[Kogaino] Black Five [English]
COMIC Masyo 2015-11
[Kharisma Jati] My Wife's Gangrape Fantasy Ch. 1-7 [Chinese] [沒有漢化]
(C95) [Mix Fry (Takurou)] Bunny Koga-tan (THE iDOLM@STER: Shiny Colors)
(C46) [Tenny Le Tai (Aru Koga)] R Time Special (3x3 Eyes, Ranma 1/2, Sailor Moon)
逮捕されちゃうぞ
COMIC HOTMILK 2018-06 [Digital]
(SC8) [Tsurikichi-Doumei (Kogawa Masayoshi)] Oudou ~Rolling Elbow no Shou~ (Various)
COMIC Masyo 2011-08 [Digital]
COMIC Masyo 2014-12
[Hakidame no Koganemushi (Koganemushi)] Nikutai Henka Shoujo Yawa ~MaGal Kissa no Nanokakan~ (Kantai Collection -KanColle-) [Digital]
COMIC Masyo 2014-10
[Tenny Le Tai (Aru Koga)] Tsukutsuku Mizuki-tan (mokke)
Negi x Kogami Ryoken
(C85) [Gainamon (Natsu no Koucha)] Kogasa No Okuchi Lesson! (Touhou Project) [English] {biribiri}
[Gachonerou] のんきBOY Ch. 1-19
[Kogawa Masayoshi] Kangoshi Saotome Ayako no Nichijou - Daily life of nurse Ayako Saotome
[CELTRANCE (Kogaku Kazuya)] Maki-chan ga Hajimete Nico-chan to Ecchi suru Hon (Futanari Ban) (Love Live!) [English]
Tsukioka Kogane
COMIC HOTMILK 2016-10 [Digital]
(C83) [Seven Days Holiday (Shinokawa Arumi, Koga Nozomu)] Mad Tea Party (Sword Art Online) [English] [EHCOVE]
(C78) [Aichiko (ubizo)] Nekogami Akira-sama to Issho. (Lucky Star)
Tsukioka Kogane no Dosukebe Lesson
COMIC Megastore Alpha 2013-09 [Digital]
BUSTER COMIC 2016-09
(C95) [Omocha Kaden (Beni Bana)] Saimin Usagi (Seishun Buta Yarou wa Bunny Girl Senpai no Yume o Minai)
[Yamitsuki Honpo (Kogasaki Yuina, Youmei)] Double Cast (Kantai Collection -KanColle-) [English] [CGrascal] [Digital]
(C85) [Konnyaku Nabe (magifuro Konnyaku)] Tatara Kogasa Jiken | Tatara Gasacide Incident (Touhou Project) [English]
Girl's responsibility
COMIC Momohime 2007-06
Comic Moe Max Vol.3
[R-Koga] Tsumatte Yonde - Call me a wife!
(SC2015 Summer) [Seven Days Holiday (Shinokawa Arumi, Koga Nozomu)] Bell-kun wa Uwakimono | Is Bell a Playboy? (Dungeon ni Deai o Motomeru no wa Machigatteiru Darou ka) [English] [EHCOVE]
(C94) [Seven Days Holiday (Shinokawa Arumi, Koga Nozomu)] Aogami Shoujo no Junan - The Passion of Blue Hair Girls (Various)
COMIC HOTMILK 2017-04
COMIC Masyo 2010-07
COMIC Megastore 1999-09
(C96) [Seven Days Holiday (Shinokawa Arumi, Koga Nozomu)] Yappari Onii-sama to Kozukuri o. (Lord El-Melloi II-sei no Jikenbo) | In the End, I Want to Make Children with Onii-sama [English] [EHCOVE]
(CT7) [Tsurikichi Doumei (Kogawa Masayoshi)] Tenjouin Asuka Only Hon (Yu-Gi-Oh! GX)
(C81) [TAIL UP! (Arima Yutaka)] KogaCyclone (Touhou Project)
Sekai de Ichiban Neko Maid
[Hakidame no Koganemushi (Koganemushi)] Short Situations [Chinese] [K记翻译] [Digital]
[R-Koga] Mechashiko Hiyakekko | 曬痕女孩來做愛吧 [Chinese]
Tenshi to Akuma
COMIC Megastore Alpha 2014-06
[Anthology] Hinakan 3
[Kakogawa Tarou] Illegal Ability
[Tenny Le Tai] Neko Maid File
COMIC Megastore 2005-01
(C87) [Seven Days Holiday (Shinokawa Arumi, Koga Nozomu)] Fallen Angela (Rakuen Tsuihou -Expelled from Paradise-) [English] {doujin-moe.us}
(C76) [abgrund (udk)] Taru Yume 5 (Narutaru) [English] =SW=
Bishoujo Doujinshi Battle 7
(C84) [Konnyaku Nabe (magifuro Konnyaku)] Koga Ryona Vol. 2 (Touhou Project)
(COMIC1☆7) [Seven Days Holiday (Shinokawa Arumi, Koga Nozomu)] CATS AND DOGS (Hentai Ouji to Warawanai Neko.) [English] [DeadlyFatalis]
COMIC Megastore 2004-04
Comic MoeMax 2007-06
[molefoneus (Koga Chiharu)] Osuni Narutoki Daiisshou Hirudora
[Anthology] Kemono For Essential
[Kogaino] Yabakune
COMIC Megastore 2010-04