[Kai Hiroyuki] Tomo Haha Ch. 1 | Friend's Mother Ch. 1 [English] [biribiri]

[Kai Hiroyuki] Work & Sex | 上班工作&激情性愛 [Chinese]

[Kai Hiroyuki] Boku no Yamanoue Mura Nikki | 我的山中農村配種日記 [Chinese]

[Kai Hiroyuki] Bitch Hi School | 私立~精洸学園 [Chinese]

[Kai Hiroyuki] Love Kachuu - Lover's Time [English] [biribiri + Sei-Jin + The Lusty Lady Project]

[Kai Hiroyuki] Love Kachuu | Lover's Time [English] [biribiri + Sei-Jin + The Lusty Lady Project]

[Kai Hiroyuki] Boku no Yamanoue Mura Nikki Ch.1-10

[Kai Hiroyuki] Ane Haha Kankei [Chinese]

[Kai Hiroyuki] Ane Haha Kankei Ch. 1-9 [English] {Tadanohito}

[Kai Hiroyuki] Tomo Haha

[Kai Hiroyuki] Kyonyuu Eromangaka-san to no Pakohame Shiryouzukuri wa Taihen desu! [Digital]

[Kai Hiroyuki] Love Kachuu | Lover's Time Ch. 1-8 [English] [biribiri + Sei-Jin + The Lusty Lady Project]

[Kai Hiroyuki] Bitch Hi School

[Kai Hiroyuki] Manatsu no Hanazono ~Oba + Shimai Ohame H~

[UROBOROS (Utatane Hiroyuki)] G-ZERO Kai (Hikaru no Go)

[Kai Hiroyuki] Amai Sasoi ni Goyoujin!? (COMIC Penguin Club Sanzokuban 2011-03) [English] [CGrascal]

[Kai Hiroyuki] Joi to Nurse to Doutei-kun | Female Doctor, Nurse and a Virgin Boy (Chounyuusai) [English] [biribiri]

[Kai Hiroyuki] Manatsu no Hanazono Ch. 1-3 [English] [Yoroshii]

[Kai Hiroyuki] Chounyuusai

[Kai Hiroyuki] Kyonyuu Eromangaka-san to no Pakohame Shiryouzukuri wa Taihen desu!

[Kai Hiroyuki] WORK & SEX ♥ [English] {Brolen}

[Kai Hiroyuki] Chounyuusai Ch. 2, 4 [English] [biribiri]

[Kai Hiroyuki] Hannari Otona Kyouiku - Mother's Sex Lesson

[Kai Hiroyuki] Otona Kyouiku | Adult Education (Hannari Otona Kyouiku) [English][Amoskandy]

[Kai Hiroyuki] Hannari Miboujin | Elegant Widow (Hannari Otona Kyouiku)[English][Amoskandy]

[Kai Hiroyuki] WHaha to Ore no Kazoku Seikatsu | My Family Life with My Two Mothers (Hannari Otona Kyouiku) [English][Amoskandy]

[Kai Hiroyuki] Haramase! ~Tanetsuke sareru Hitozuma-tachi~ Ch. 6-7 [English]

Kai Hiroyuki] Chounyuusai Ch. 1-6

[Kai Hiroyuki] Itoko Knight Episode: 2 (COMIC Penguin Club 2022-04) [Chinese] [Digital]

[Kai Hiroyuki] Delizuma ~Danchizuma no Himitsu Ch. 1-5 [Digital]

[Kai Hiroyuki] Haramase! ~Tanetsuke sareru Hitozuma-tachi~

[Kai Hiroyuki] Love Kachuu | Lover's Time Ch. 1-10 [English] [biribiri + Sei-Jin + The Lusty Lady Project]

[Kai Hiroyuki] Ochizuma Ch. 1-3, 6 [Digital]

[Kai Hiroyuki] Chounyuusai Ch. 2-6 [English] [biribiri]

[Kai Hiroyuki] Ore to Imouto no "Nichijou". (COMIC Penguin Club Sanzokuban 2013-09)