Nyotaika de Ecchi Kenshin!? Mirudake tte Itta no ni... 1 | Gender Bender Into Sexy Medical Examination! You said that you were only going to look... 1
[Tamatsuyada, Satou Kimiatsu] Energy Kyo-ka!! ~Bakunyuu JK. Gachizeme Hatsujouchuu!~ Rachel Toujou! Shoukan o Kakete Lotion Mamire no Doutei Tokumori Match!! [Digital]
[Tamatsuyada, Satou Kimiatsu] Energy Kyo-ka!! ~Bakunyuu JK. Gachi Zeme Hatsujou Chuu!~ [English] [Digital]
Young Champion Retsu Vol.07 (2007-07-25 Zoukangou)
寝取られお姉さん7
Young Champion Retsu Vol.02
Otona no Zokusei Late2015
[Tamatsuyada, Satou Kimiatsu] Energy Kyo-ka!! ~Bakunyuu JK. Gachi Zeme Hatsujou Chuu!~ Ch. 1-6 [English] [Digital]
[Kitamatsuya] Netori Mama Kanjuku Dorian no Yuuwaku (Boku no Hero Academia)
[Matsuyama Seiji] Otona no Eiken ~Shinonome Chiharu 26-sai~ (Eiken) [Digital]
[Matsuyama Seiji] Yarashite Kureru Gal Onee-chan. [Digital]
Young Champion Retsu Vol.05
てるさんおいしいです!
Hajimete no Furin Onsen
Young Champion Retsu Vol.14
(C92) [Riff-Racket (Racket)] Shimatsuya-san to Beach Date (Phantasy Star Online 2)
Eiken Adult Kirika ~With Love From the Milk Bags~
COMIC X-EROS #25
[Matsuyama Seiji] Eiken Rensai Kaishi 10-shuunen Kinen Bon Kaiteiban Sai (Eiken) [Digital]
Young Champion Retsu Vol.03
[Matsuyama Seiji] Kinjo no Chuugakusei no Otokonoko ga Watashi no Mune o Chirachira Mite kuru node... Sex o Shite ageta Hanashi. [Digital]
30-Sai Imouto
Young Champion Retsu Vol.09
Iiko Iikoto Kimochi Iikoto | 好孩子舒服的事欲罢不能的事情
50-sai Bakunyuu Hitozuma Kounenki de Heikei shite Ninshin shinaku natta node... Nakadashi SEX Shihoudai.
[Matsuyama Seiji (Matsuyama Seiji)] Part no Misako-san Mune o Chirami Shite Kuru Shinjin-kun ni Fudeoroshi Shite Ageru no Ga o Suki
[Tamatsuyada, Satou Kimiatsu] Energy Kyo-ka!! ~Bakunyuu JK. Gachizeme Hatsujouchuu!~ EX02: Choujou EroWres "Leona vs Sherry"! Sokushaku Fresh Dirty Ranbu!! [English] [Wazawahi] [Digital]
[Tamatsuyada, Satou Kimiatsu] Henshin!? Sukekomas!! Dai 3-wa Gabugabu Harem? Kiken na Omorashi Poolside. [Digital]
Young Comic 2008-07
COMIC X-EROS #30
[ピロシキ帝国(ンモ=エザゴ)] 生徒会長が食っちゃ寝を繰り返したら牛になったって本当ですか!?(白猫プロジェクト)
[Tamatsuyada, Satou Kimiatsu] Energy Kyo-ka!! ~Bakunyuu JK. Gachi Zeme Hatsujou Chuu!~ Ch. 1-7 [English] [Digital]
Otona no Eiken
[Takatsu] Hitozuma A-san to Musuko no Yuujin N-kun - Married wife A and son's friend N-kun [Chinese] [罗洁爱儿个人汉化]
[Tamatsuyada] Henshin!? Sukekomassu!! Soushuuhen [Digital]
[Matsuyama Seiji] Eiken Makaizou 3 (Eiken) [Digital]
Energy Kyo-ka!! ~Bakunyuu JK. Gachi Zeme Hatsujou Chuu!~ Ch. 1-7
[Matsuyama Seiji] Onegai Makoto Sensei (Space Battleship Yamato 2199) [Digital]
Young Champion Retsu Vol.15
Netorare Onna Kyoushi ninper Kiwami
(C81) [BOBCATERS (Hamon Ai, Matsuyama Seiji)] Yukiho Shinken (THE iDOLM@STER)
[Matsuyama Hayate] Nyotaika de Ecchi Kenshin!? Mirudake tte Itta no ni... 4 [Digital]
Young Comic 2009-07
Eiken Makaizou 3
Young Champion Retsu Vol.11 (2008-03-30 Zoukangou)
[Matsuyama Seiji] Yarashite Kureru Yankee no Mama [Digital]
Yourtoy
DisSpa!!! Ukemi-chan no Hajimete no Spanking Oshiri Penpen
[Matsuyama Seiji] Loli-gao de Kyonyuu na Okaa-san ga Boku no Hatsutaiken. [Digital]
50-sai no Haha ga Erosugite Nakadashi Sex o Shite moratta Doutei no Boku
[Matsuyama Seiji] Eiken Makaizou 2 (Eiken) [Digital]
Young Champion Retsu Vol.17
Young Comic 2009-01
Seiji Matsuyama Onegai Anna Senensei
Shimatsuya-san to Beach Date