COMIC Masyo 2010-10
COMIC Megastore 2011-11
[Anthology] PetaFeti. 15 [Digital]
Mad Kogasax
Comic Megastore 2004-12
(C89) [Konnyaku nabe (Harasaki)] Kogasa VS Raptors (R-18G Koga Ryona Goudoushi 3 Koga Ryonabe Shime) (Touhou Project) [English] {atomicpuppy}
(C63) [Tsurikichi Doumei (Kogawa Masayoshi, Umedama Nabu)] Soutennenshoku Nan Demo-R Vol. 2 (Various)
COMIC Masyo 2011-11 [Digital]
Comic Masyo 2005-05
[R-Koga] Osanai Mitsu
COMIC HOTMILK 2019-01 [Digital]
COMIC HOTMILK 2017-08
BUSTER COMIC 2015-09 [Digital]
[Kogaino] Maji, Panee!
Comic Megastore 2001-05
COMIC XO 2009-04 Vol.35
Comic Megastore 2004-11
COMIC Masyo 2017-01
Suwarete Nomarete Kogasa-chan | Kogasa-chan Gets Sucked in and Swallowed
COMIC XO 2008-01 Vol. 20
(SC2015 Summer) [Seven Days Holiday (Shinokawa Arumi, Koga Nozomu)] Bell-kun wa Uwakimono (Dungeon ni Deai o Motomeru no wa Machigatteiru Darou ka)
COMIC Megastore Alpha 2016-01
[abgrund (udk)] Taru Yume 2 (Narutaru) [Chinese] [刷牙子漢化]
COMIC Megastore 2011-01
COMIC Muga 2004-12, 2005-01 combination
COMIC HOTMILK 2018-01 [Digital]
COMIC HOTMILK 2017-12 [Digital]
[Tenny Le Tai (R-Koga, Pia Pia)] 逮捕されちゃうぞ (3x3 Eyes, Minky Momo, Nadia, Hoshizuki Paradise, You're Under Arrest)
[Nekoga Jun] V-I-P
SWEET LIPS + SHARAKU SPECIAL + MOON RHAPSODY
(C76) [Andore★JAPAN] Ero Nika Gakushuu Chou (Various)
恋の茶番劇場
[CELTRANCE (Kogaku Kazuya)] Mamimamix 3 (Puella Magi Madoka Magica) [English] [Digital]
(COMIC1☆7) [Seven Days Holiday (Shinokawa Arumi, Koga Nozomu)] CATS AND DOGS (Hentai Ouji to Warawanai Neko.) [English] [DeadlyFatalis]
Tsukioka Kogane no Dosukebe Lesson
Sanae-san to Kogasa-san
COMIC XO 2009-07 Vol. 38
COMIC Megastore Alpha 2014-01
COMIC Megastore Alpha 2014-06
COMIC HOTMILK 2019-06
Surprise Meister KogaNue
(C78) [Tsurikichi Doumei (Kogawa Masayoshi)] EROMAN (HEROMAN) [English] [_ragdoll] [Incomplete]
[Koga Ryohei] El-tentacle Birth Lady's Mk.B Ex.1
[CELTRANCE (Kogaku Kazuya)] Maki-chan ga Hajimete Nico-chan to Ecchi suru Hon (Futanari Ban) (Love Live!) [English]
COMIC HOTMILK 2018-02 [Digital]
よいこのらたいぶっく2
COMIC Masyo 2015-08 [Digital]
[Anthology] Kotori-kan Vol 2
(C42) [Naniwaya (Various)] MAKE UP (Bishoujo Senshi Sailor Moon)
COMIC Momohime 2007-02 Vol. 76
(C85) [Konnyaku Nabe (magifuro Konnyaku)] Tatara Kogasa Jiken (Touhou Project) [Chinese]