Koga Ryouhei Prelfillust

COMIC HOTMILK 2017-01 [Digital]

COMIC Megastore Alpha 2015-03

Tadashiku Tsukaimashou.

Comic MoeMax 2007-06

COMIC MEGASTORE 2006-09

COMIC HOTMILK 2017-07

[R-Koga] Miseijuku Bitch

COMIC HOTMILK 2016-12

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

Playing Mommy and Daddy [English] [Rewrite] [olddog51]

COMIC Momohime 2006-02

COMIC Momohime 2006-03 Vol. 65

COMIC HOTMILK 2017-07 [Digital]

[Anthology] Oshiru Ko Kan 1

Comic Megastore 2004-09

(C87) [Seven Days Holiday (Shinokawa Arumi, Koga Nozomu)] Brilliant Christmas (Amagi Brilliant Park)

[Kogawa Masayoshi] Kangoshi Saotome Ayako no Nichijou - Daily life of nurse Ayako Saotome

COMIC Momohime 2004-03

(C49) [Ganso Sonoda Ya (Various)] Chousen Ame Ver.08

Akogare Kanojo no Risou to Genjitsu | My Crush: Expectation vs Reality

(SC2015 Summer) [Seven Days Holiday (Shinokawa Arumi, Kogabo)] Bell-kun wa Uwakimono (Dungeon ni Deai o Motomeru no wa Machigatteiru Darou ka)

Comic Hime Dorobou [2008-09]

よいこのらたいぶっく2

(C68) [Kakogawa-ya (Kakogawa Tarou)] ROWDY BUTTERFLY (Dead or Alive)

逮捕されちゃうぞ

(C89) [Seven Days Holiday (Shinokawa Arumi, Koga Nozomu)] IYASHIKASHI (Dagashi Kashi) [Chinese] [塔布里斯個人漢化]

Comic Masyo 2005-09

[Anthology] Youchien II

[CELTRANCE (Kogaku Kazuya)] Maki-chan ga Hajimete Nico-chan to Ecchi suru Hon (Futanari Ban) (Love Live!) [English]

(Reitaisai 11) [ROCK CLIME (Danbo)] Kaso Koga Tabe Houdai (Touhou Project)

COMIC Megastore 2007-04

COMIC HOTMILK 2016-08

[Lolimate Seizou Koujou (Lolimate)] Uso no Odorokashikata o Oshierarete Tokuige ni Jissen suru Kogasa-chan (Touhou Project) [Digital]

COMIC Masyo 2014-12

[R-Koga] Tsuru Tsuru Mumou Chitai

(C44) [Tenny Le Tai (R-Koga, Pia Pia)] Lunar Dancer (Bishoujo Senshi Sailor Moon)

COMIC Hime Dorobou 2009-09

(C75) [CELTRANCE (Kogaku Kazuya)] Seigeki Shiei! (Lucky Star) [Chinese] [诱骗者迪卡伊个人汉化]

COMIC Momohime 2003-07

COMIC Masyo 2016-01

Comic Megastore 2003-11

COMIC Megastore Alpha 2014-01

COMIC Megastore Alpha 2015-06

(C89) [Seven Days Holiday (Shinokawa Arumi, Koga Nozomu)] UNDER THE SKY (Granblue Fantasy)

[R-Koga] Kitsu Kitsu Ch.02 [English] [ATF]

[Tenny Le Tai] Konoko Nekonoko

Hamedori Koga-tan

COMIC Megastore Alpha 2014-08 [Digital]

[R-Koga] Sample Me Please

[Hakidame no Koganemushi (Koganemushi)] Short Situations [Chinese] [K记翻译] [Digital]

Comic Megastore 2001-01

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

COMIC Megastore 2007-11

[Anthology] Bishoujo Asobi - Cutie Pets [Chinese]

COMIC Momohime 2004-01

(SC60) [Seven Days Holiday (Shinokawa Arumi, Koga Nozomu)] NO WORK, NO LIFE? (Hataraku Maou-sama!)

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

[R-Koga] Kitsu Kitsu

COMIC Megastore Alpha 2015-02

[Tenny Le Tai] Sekai de Ichiban Neko Maid

[R-Koga] Bubunteki Otonaka Keikaku

[Yaburi Dokoro (Hakano Shinshi)] Kogasa-chan no Shojo o Ubatte Haramase Mata Okasu Hon (Touhou Project) [Chinese] [CE家族社] [Digital] [Incomplete]

Pillow Talk mo Oko Nomi de

[すぐそこ] べリルの輪 (Disgaea)

(C78) [Youkouro (Various)] Youkouro no Dakimakura 2006 Nen-ban+α (Various)

(Shuuki Reitaisai 2) [COLOR-STAINING (Akatsuki Johnny Reitou)] Onanie Princess Hatate (Touhou Project)

Koga-tan ni Gyugyutto Amaete

COMIC HOTMILK 2017-03 [Digital]

(CCTokyo137) [ZERO SEVEN (Damu)] in itinere (Ensemble Stars!)

(Love me do Cheer) [Chumimin (Tsutsumi Tsumimi)] un happy birth day (Ensemble Stars!)

(C83) [Seven Days Holiday (Shinokawa Arumi, Koga Nozomu)] SISTER FAERIE (Sword Art Online) [English] [EHCOVE]

[CELTRANCE (Kogaku Kazuya)] Mama Hame Sex (Tsuya) no Ni

COMIC HOTMILK 2019-01

COMIC Megastore 2007-10

(C92) [Shinkouzan Tozantai (Kogawa Yasushi)] Anoko no Mune wa Horizon (Log Horizon)

(C93) [Triple Pinch! (Hikami Izuto)] Koharu-chan Kyuusekkin! (THE IDOLM@STER CINDERELLA GIRLS)

Saimin Usagi

(COMIC1☆13) [Seven Days Holiday (Shinokawa Arumi, Koga Nozomu)] Bougin (Ryuuou no Oshigoto!) [Chinese] [空気系☆漢化]

Hinakan Hi! Vol. 04

COMIC Megastore Alpha 2016-01