Koga Ryouhei Prelfillust

[Koganei Musashi] Manga Ero Monogatari (Card Captor Sakura, Cyber Team in Akihabara, Fun Fun Pharmacy, Battle Athletes, Nadesico, Love Hina, Ojamajo Doremi, Utena)

Koga-tan ni Gyugyutto Amaete

[Simao] Tsukioka Kogane (THE iDOLM@STER: Shiny Colors) [English]

COMIC Megastore 2008-08

COMIC Megastore 2008-07

(C84) [Konnyaku Nabe (magifuro Konnyaku)] Koga Ryona Vol. 3 (Touhou Project) [Chinese] [yuanzhongwo渣汉化]

COMIC Momohime 2003-07

[Kakogawa Tarou] Aizouningen Virgin Tail | Love Making Human, Virgin Tail (Comic Unreal Anthology Color Comic Collection 2 Vol. 2) [English] [q91] [Digital]

[Butaro] ブー太郎

[R-Koga] Tsuru Tsuru Mumou Chitai

(C100) [CELTRANCE (Kogaku Kazuya)] Momo-san no Akarui Shami-ochi Keikaku (Machikado Mazoku) [Digital]

COMIC Megastore Alpha 2015-07

(C61) [Tenny Le Tai (R-Koga, EFINK)] Neko Maid A GO GO!

[Hakidame no Koganemushi (Koganemushi)] Succubus School Life 1-nensei Hen [English] [Digital] [Incomplete]

COMIC Momohime 2003-04 Vol. 30

COMIC Masyo 2017-03 [Digital]

(Mimiket11) [Tenny Le Tai (Chilitan, Aru Koga)] Her-Tan x Her-Tan (Harry Potter)

(C48) [Kyokutou Juujigun (Michael Harawata)] Shuw Da Issen (Tekken)

COMIC Momohime 2007-03

COMIC Momohime 2005-11

(C66) [Shinkouzan Tozantai (Kogawa Yasushi)] Happa Tai 2 Revised Edition (ToHeart, Kizuato, and Magical Antique)

COMIC HOTMILK 2018-02 [Digital]

Comic Megastore 2006-10

(Futaket 6) [abgrund (udk)] Taru Yume 6 (Narutaru)

COMIC Masyo 2010-08

(C37) [MATSUBAYA Corporation (Various] Route RANMA (Ranma 1/2)

[Yaburi Dokoro (Hakano Shinshi)] Kogasa-chan no Shojo o Ubatte Haramase Mata Okasu Hon | The Raping, Impregnating and Popping of Kogasa-chan's Cherry Book (Touhou Project) [English] [Digital]

COMIC HOTMILK 2017-07

Sanae-san to Kogasa-san

(C82) [Penpengusa Club, MEGA-MIX (Katase Minami, Nekoga Yoshiki)] Kasoku Sekai e Youkoso 2 (Accel World)

[Konnyaku Nabe (magifuro Konnyaku)] Odoroki no Kogasa dezumu (Touhou Project) [English] [CGrascal] [Digital]

[R-Koga] VR Series [Digital]

(C94) [Seven Days Holiday (Shinokawa Arumi, Koga Nozomu)] ETOILE (Shoujo Kageki Revue Starlight) [Chinese] [残碑日月个人汉化]

[CELTRANCE (Kogaku Kazuya)] Momoiro Takarabako (Machikado Mazoku) [Digital]

[CELTRANCE (Kogaku Kazuya)] Momoiro Takarabako (Machikado Mazoku) [Chinese] [漢化工房BOKI組] [Digital]

COMIC Masyo 2016-01

[Anthology] PetaFeti. 16 [Digital]

Dreaming of Sis [English] [Rewrite] [olddog51]

Comic MoeMax 2007-06

COMIC Masyo 2013-08

[H-Magazine] Comic MoeMax - Vol.007 [2007-12]

(C84) [Konnyaku Nabe (magifuro Konnyaku)] Koga Ryona Vol. 2 (Touhou Project) [Chinese] [yuanzhongwo渣汉化]

(C83) [Sugusoko (Yuma Ryouhei)] Hakudaku Nemesis (To LOVE-Ru)

Comic Megastore 2008-06

(SC56) [Amagi Seitetsusho (Ebisu)] Laboratory Animals + Hermaphroditism = Passion (Medaka Box) [English] -Krizalid-

COMIC Masyo 2014-02

(C89) [Konnyaku nabe (Various)] R-18G Koga Ryona Goudoushi 3 Koga Ryonabe Shime (Touhou Project)

(C80) [Sugusoko (Yuma Ryouhei)] Toraware no Madouhime Gekan (Lord of Lords Ryu Knight)

COMIC Megastore Alpha 2014-11

[R-Koga] Hiyake Sex Enikki - Picture Diary of a xxx with the Suntanned [Digital]

Comic Megastore 2004-01

COMIC Megastore Alpha 2015-02

COMIC Megastore 2009-07

COMIC Momohime 2007-01

Comic Hime Dorobou 2006-12

(C78) [Tsurikichi Doumei (Umedama Nabu, Kogawa Masayoshi, Uranoa)] Nogaremono Nan Demo-R (Various)

Comic Megastore 2003-12

(SPARK10) [choco chunk (Sunika)] Tadashiku Tsukaimashou. (Ensemble Stars!)

COMIC Masyo 2018-02 [Digital]

Spats o Haita Kogasa-chan Goudou

COMIC Masyo 2016-07

(Mou Nani mo Kowaku Nai 2) [CELTRANCE (Kogaku Kazuya)] Tadaima. | I'm Back (Puella Magi Madoka Magica) [English] [yuriproject]

[Seven Days Holiday (Shinokawa Arumi, Koga Nozomu)] Seijyo Seifuku | Holy Woman Conquest [English] =TB= [Digital]

(C83) [CELTRANCE (Kogaku Kazuya)] Gyakushuu no Akai Hito (Puella Magi Madoka Magica) [English]

(C84) [Konnyaku Nabe (magifuro Konnyaku)] Koga Ryona (Touhou Project) [Chinese] [yuanzhongwo汉化]

[Koga Ryohei] El-tentacle Birth Lady's Mk.B Ex.1

(C46) [Tenny Le Tai (Aru Koga)] R Time Special (3x3 Eyes, Ranma 1/2, Sailor Moon)

[Seven Days Holiday (Shinokawa Arumi, Koga Nozomu)] Oujo Seifuku [Chinese] [逃亡者×真不可视汉化组] [Digital]

(C94) [Kansai Gyogyou Kyoudou Kumiai (Marushin)] Idol Nara Seikoushou No Kokoroe Kurai Arubeki Dato Omouyo Kogane Chan (THE iDOLM@STER: Shiny Colors)

(C89) [Konnyaku nabe (Harasaki)] Kogasa VS Raptors (R-18G Koga Ryona Goudoushi 3 Koga Ryonabe Shime) (Touhou Project) [English] {atomicpuppy}

COMIC Momohime 2002-10

Dandan Eyes (3x3 Eyes)

COMIC HOTMILK 2016-08 [Digital]

COMIC HOTMILK 2018-07 [Digital]

Mikogami Shoujo Tanteidan

(COMIC1☆7) [Seven Days Holiday (Shinokawa Arumi, Koga Nozomu)] CATS AND DOGS (Hentai Ouji to Warawanai Neko.)

(C79) [AG (Ai Samurai)] Bumpin' Balls!! (Summer Wars) [English] {Leon990 Scanlations}

[R-Koga] Papa's Sex Education Ch1-3 [Eng]