[Rippadou (Inugai Shin, Takada Kouichi, ToWeR)] Rumble Bumps (Rumble Roses)
(C91) [KORISUYA (Korisu)] Yuugure Kaisuiyokujou Kouishitsu
COMIC RIN 2008-04 Vol. 40
COMIC MUJIN 2010-03
(C75) [KUMIKAE-DNA] Kumikae Nyan (Zettai Karin Children)
Koui Ari
COMIC MUJIN 2009-02
(C60) [OVACAS (Hirokawa Kouichirou)] OVACAS SKETCH 3 (Various)
(C52) [PERFECT CRIME (REDRUM)] You and Me Make Love.
[Sa-Ki (Sa-Ki)] Torokeru you na Koui o Shi yo? vol. 2 ~KOTO-HONO-UMI MIX~ (Love Live!) [Chinese] [Digital]
COMIC Mugen Tensei 2016-03
Sono Sexy Doll wa Koui o Suru
(C83) [OVACAS (Hirokawa Kouichirou)] Buratei Heart. (Joshiraku)
Toshishita no Boku ni Seikoui no Kimochiyosa o Oshiete kureru Osananajimi no Onee-san
Boku no Koe wo Kiita Joshikousei-tachi ga Ero sugiru!
COMIC MUJIN 2013-03
Senmuchou no Fusei Koui
Do-S Misako
(Shuuki Reitaisai 3) [YOMUTHUHIRASAKA, Heart's nest (bbsacon, hato)] Touhou Kouinroku (Touhou Project)
Karui Kimochi de Heya ni Ageta Gal to Hamemakuri!?
(C74) [JIBAKU-SYSTEM (Suzuki Amaharu)] OWABI -2008.08.17-
(CR25) [Hoka Hoka Shoten (various)] ACTIVE HEART (various)
[Dakouin Saburou] Taiikikaikei Oshiegogui
COMIC Mugen Tensei 2015-07 [Digital]
(COMIC1☆3) [TETRODOXIN (Nise Kurosaki)] Zettai Karen Shoujo Q2 (Zettai Karen Children) [English] {doujin-moe.us}
Doujin Anthology Bishoujo Gumi 8
Bunnyue to no Kake ni Katte H Suru Hon | A book about winning a bet and having sex with Bunny King
COMIC SIGMA 2010-07 (Vol.46)
Two Toned Romps
(CSP5) [OVACAS (Hirokawa Kouichirou)] Haru Matsuri Chichi Matsuri 2010 EVENT EDITION (Various)
COMIC MUJIN 2005-11
(C72) [Ovacas (Hirokawa Kouichirou)] Lucky Punch (Lucky Star)
(C69) [Zangyaku Koui Teate (Nasake Muyou)] Garasu no Tsuki (Tsukihime)
Comic Mujin 2007-12
[Okinawa Taieki Gunjinkai (Yasunaga Kouichirou)] Suman Nou Nagase-san (ToHeart)
[Anthology] Aniparo Miki 4 (Various)
[Motley crew (Arima Kouichi)] Seifuku Gal to Doutei Kyoushi no Himitsu no Seikyouiku [Digital]
[Del Rio] Moshimo Kouichi ga …… Dattara (Another)
[TETRODOTOXIN (Nise Kurosaki)] ZETTAI KAREN SYOUJYO Q (Zettai Karen Children) [English] {doujin-moe}
[Matsu Takeshi] Shinmai Ginkouin Kyuuryuu Kouji no Junan Ch. 1-13
Anemo Kitanaeki -Bayonetta Jigoku-
(C77) [OVACAS (Hirokawa Kouichirou)] Love Style (Love Plus)
Tsuujou Koui to Ijou Koui de Nikai Shasei Sasete Kureru Mama wa Kirai desu ka?
[Sa-Ki (Sa-Ki)] Torokeru you na Koui o Shi yo? (Love Live!) [Digital]
[Naniwa Onsen Tamago Kumiai (Katsumi Kouichi)] Carrot Extend! (Pia Carrot e Youkoso!!)
COMIC RiN 2007-11
(Futaket vs. ABC ~Hentaisai~) [OVACAS (Hirokawa Kouichirou)] Gakuen Erotopia (Manabi Straight!)
[Okinawa Taieki Gunjinkai(Yasunaga Kouichirou)] Suika ha kawa ga sukerumade
Gogo no Teitokushitsu
JC Idou Kouishitsu
[Hitotsukami (Kitamura Kouichi)] Hazukashi Sugiru Kimodameshi
(C77) [Koudansha (Kouda Tomohiro)] Esuchu! 3 (Zettai Karen Children) [English] [Hao Scanlations]
[Arima Kouichi] Haruranman - Spring Bloom (COMIC Anthurium 2021-04) [Chinese] [不够色汉化组] [Digital]
[Hitotsukami (Kitamura Kouichi)] Scat ni Mezamete Shimatta Imouto
[Kusano Kouichi] SPOON
COMIC MUJIN 2011-04
[Dakouin Saburou] Ero Ane - The Erotic Elder Sister
COMIC AUN 2005-07 Vol. 110
(COMIC1☆20) [RYU-SEKI-DO (Nagare Hyo-go)] Sono Sexy Doll wa Koui o Suru 2 (Sono Bisque Doll wa Koi o Suru)
COMIC AUN 2005-10 Vol. 113
(AC2) [Usotsukiya (Oouso)] Tsuukin Douchuu de Anoko ga Midara na Koui o Shite Kuru Hon 4 [Chinese] [绅士仓库汉化]
COMIC Anthurium 2022-05
(Panzer Vor! 17) [Nekomonidoh (Sanada)] Koko ga Anzio no Kouishitsu desu (Girls und Panzer)
Joshi Kouishitsu Suieibu
[Kaitou Yuuhi] Natsu to Mizugi to Kouishitsu (Otokonoko HEAVEN Vol.41) [Chinese] [瑞树汉化组] [Digital]
(Shota Collection 3) [KuruGuru DNA (Hoshiai Hilo)] Binrouteki Fuuin (Digimon Frontier) [English] {Shotachan}
Men's Dolphin 1999-11-01 Vol.03
(C77) [Okinawa Taieki Gunjinkai (Yasunaga Kouichirou)] Mega × Dora! 02 (Toradora!)
(C67) [OVACAS (Hirokawa Kouichirou)] HIME-Hajime (My-HiME)
Mai Shield 21
[Anthology] Fellatio Anthology Kouin Ojoku
(C64) [Abellcain (Fujimaru Arikui)] Lucky Come Come (Kujibiki Unbalance)
COMIC AUN 2003-11 Vol. 90
(C95) [H-SQUAD (Guglielmo)] Watashi-tachi no Seikoui Tokubetsu Jisshuu -Honban Hen- 丨我們的性行為特別實習 -本番編- [Chinese] [沒有漢化]
(C70) [Okinawa Taieki Gunjinkai (Yasunaga Kouichirou)] Futakoi Challenge (Futakoi Alternative)
(Comic Castle Final) [Nipopo Crisis, OVACAS (Genka Ichien, Hirokawa Kouichirou) Patsukin Dynamite HEAVEN (Bakusou Kyoudai Lets & Go!!)
COMIC MUJIN 2013-11
Kaibenburo
COMIC MUJIN 2009-05
(C78) [koakuma sageha (sage joh)] Zettai Inran Adults (Zettai Karen Children)
[Amagiri MIO] Fusei Koui ~Ubawareta Hitozuma~ | 婦性交為 ~被奪取的人妻~ [Chinese]
(C90) [Hooliganism (Murasaki Syu, Hirokawa Kouichirou)] Kono Subarashii Demi-chan no Demi Sauce! (Demi-chan wa Kataritai, Kono Subarashii Sekai ni Syukufuku o!)
Dagashi Kashi no Ero-hon Kokonotsu-kun Kouiunoga Suki nano? | So This Is What You're Into, Kokonotsu?
Love Jossie 正臣くんに娶られました。 第2-9話
[Hitotsukami (Kitamura Kouichi)] Kanojo no Himitsu
Hitozukiai ga Nigate na Miboujin no Yukionna-san to Noroi no Yubiwa
COMIC MUJIN 2003-12
Kouin Dorei
[RADIOHEAD] A Golden Week in August Playing with Grandma!
[Anthology] Bishoujo Doujinshi Anthology 17 (Various)
(C76) [OVACAS (Hirokawa Kouichirou)] Houkago XX Time | After School XX Time (K-ON!) [English] [Darknight]
Otaku evolution history
[ANTHOLOGY] Meganekko Deluxe
(C76) [J.O.C★e.go!! (Midori Kouichi)] Lucky Tune (Neon Genesis Evangelion)
(C85) [Takatobiya (Haba Hirokazu)] Furin Koui (Gundam Build Fighters)
Tsuukin Douchuu de Anoko ga Midara na Koui o Shite Kuru Hon
Touhou Kouinroku
[Nodame] Senpai wa Kouiu no Kiraidesuka!? | Does Senpai Not Like This Kind of Thing!? (COMIC Anthurium 2017-08) [English] {Hennojin} [Digital]
(SC2016 Winter) [Majimeya (Isao)] Dagashi Kashi no Ero-hon Kokonotsu-kun Kouiunoga Suki nano? (Dagashi Kashi)
(C94) [H-SQUAD (Guglielmo)] Watashi-tachi no seikoui tokubetsu jisshu - zengi-hen - 丨我們的性行為特別實習 -前戯編- [Chinese] [沒有漢化]
Konsui Rape!? Yajuu to Kashita Hajime-chan!
(SUPERKansai20) [Neitz (Aomaru)] Gasshuku de no Harenchi Koui wa Kinshi desu! (Kuroko no Basuke)
(SC46) [GUST (Harukaze Soyogu)] Sasa no Ha Haruhi to Kouichi Kyon. (Suzumiya Haruhi no Yuuutsu [The Melancholy of Haruhi Suzumiya])
Kamogawa Hyper Chargers