Manga Bon 2012-06
Gobunnoichi
Oppai de... Icchau no?
Kinjo no Chuugakusei no Otokonoko ga Watashi no Mune o Chirachira Mite kuru node... Sex o Shite ageta Hanashi.
Young Champion Retsu Vol.15
(C80) [BooBooKid (PIP)] Aki to Mikage ni Iroiro Shitemita. (Yu-Gi-Oh! 5D's) [Chinese] [正人君子路过汉化]
[Matsuyama Seiji] Misoji Idol Takahashi Reiko-san no Yawarakai Oppai de Kyousha (THE IDOLM@STER CINDERELLA GIRLS) [Digital]
Oppai Momu?
(C81) [BOBCATERS (Hamon Ai, Matsuyama Seiji)] Yukiho Shinken (THE iDOLM@STER)
Eiken Rensai Kaishi 10-shuunen Kinen Bon Kaiteiban Sai
Mewotojitedaite
Young Champion Retsu Vol.11 (2008-03-30 Zoukangou)
[Homuhomu Seisakujo (Igakino Agenasu)] Kuuko to Mahiro-san ni Ippai Ecchi na Koto o Sarechatta node Sono Ichibushijuu o Mitekudasai (Haiyore! Nyaruko-san) [Digital]
(C80) [Shoujo Kishidan (Oyari Ashito)] LURICOMPLEX +Paper (Ore no Imouto ga Konna ni Kawaii Wake ga Nai)
[zen9] Yacchae! Megumi-san | Do it! Megumi-san Ch 1-6
[Matsuyama Seiji] Eiken Makaizou (Eiken) [English] [Mongolfier] [Digital] [Incomplete]
[Matsuyama Hayate] Nyotaika de Ecchi Kenshin!? Mirudake tte Itta no ni... 5 [Digital]
[Matsuyama Seiji] Eiken Makaizou 2 (Eiken) [Digital]
Young Champion Retsu Vol.03
Young Champion Retsu Vol.16
Eiken Makaizou 3
Young Champion Retsu Vol.12 (2008-05-25 Zoukangou)
Himitsu no Koibito
Sexy Undercover Investigation! Don't spread it too much! Lewd TS Physical Examination Part 2
[Matsuyama Seiji] Oba x Boku - 41-sai Komochi no Shufu ga Doutei no Boku ni Tanomikomarete Shikatanaku...? Sex Shita Hanashi [Digital]
Onegai Anna Sensei New Chapters
Otona no Eiken 〜 Shinonome Chiharu 26-sai 〜
[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)
Young Champion Retsu Vol.04
[Matsuyama Seiji] Otona no Eiken Kirika ~Chibukuro yori Ai o Komete~ (Eiken) [Digital]
[Matsuyama Seiji] Eiken Makaizou 3 (Eiken) [Digital]
Otona no Eiken Kirika ~Chibukuro yori Ai o Komete~
Otoko no Risou wa Sex Dekiru Okaa-san
Yarashite Kureru Yankee no Mama
[Seiji Matsuyama] Ura Eiken ZERO (Eiken)
Young Comic 2008-10
50-sai no Haha ga Erosugite Nakadashi Sex o Shite moratta Doutei no Boku
Onegai Anna Sensei by Seiji Matsuyama
Young Comic 2008-12
Gender Bender Into Sexy Medical Examination! You said that you were only going to look... 1
Young Champion Retsu Vol.05
[Matsuyama Seiji] Azusa-san ga Ore no Yome de Eiken Mitai na Chou Bakunyuu dattara (THE iDOLM@STER) [Digital]
[Matsuyama Seiji] 50-sai no Haha ga Erosugite Nakadashi Sex o Shite moratta Doutei no Boku [Digital]
[Matsuyama Hayate] Nyotaika de Ecchi Kenshin!? Mirudake tte Itta no ni... 2 [Digital]
[Matsuyama Seiji] Onegai Makoto Sensei (Space Battleship Yamato 2199) [Digital]
[Matsuyama Seiji (Matsuyama Seiji)] Oppai Momu? [Digital]
Eiken Adult Kirika ~With Love From the Milk Bags~
[Matsuyama Seiji (Matsuyama Seiji)] Part no Misako-san Mune o Chirami Shite Kuru Shinjin-kun ni Fudeoroshi Shite Ageru no Ga o Suki
誘う肉穴
(Reitaisai 5) [Sonna hi no koto. (Various)] Uppun Harasu Hon. (Touhou Project)
[Matsuyama Hayate] Nyotaika de Ecchi Kenshin!? Mirudake tte Itta no ni... 4 [Digital]
(CR26) [Paradise City (various)] Tabeta Kigasuru 45 (Angelic Layer, Card Captor Sakura)
[Matsuyama Hayate] Nyotaika de Ecchi Kenshin!? Mirudake tte Itta no ni... 6 [Digital]
Nyotaika de Ecchi Kenshin!? Mirudake tte Itta no ni... | 女體化後色情體檢!?說好只看不動手的呀… Ch.1-6
Giten Ikenie Fujin ~Hikou Kaika ~
(C85) [Matsuyama Seiji (Matsuyama Seiji)] Eiken Makaizou (Eiken) [Incomplete]
(C67) [Chuuka Mantou (Yagami Dai)] Mantou .25 (Neon Genesis Evangelion)
Young Champion Retsu Vol.17
Young Comic 2009-07
[Matsuyama Seiji] Eiken Rensai Kaishi 10-shuunen Kinen Bon Kaiteiban Sai (Eiken) [Digital]
Sexy Undercover Investigation! Don't spread it too much! Lewd TS Physical Examination Part 1
Young Champion Retsu Vol.02
Eiken Makaizou 2
Manga Bon 2012-12
Young Comic 2009-01
[Matsuyama Seiji] Loli-gao de Kyonyuu na Okaa-san ga Boku no Hatsutaiken. [Digital]
[Matsuyama Seiji] Kinjo no Chuugakusei no Otokonoko ga Watashi no Mune o Chirachira Mite kuru node... Sex o Shite ageta Hanashi. [Digital]
(SC53) [Pallet Box (Haga Yuu)] Astarotte wa Omocha (Lotte no Omocha!)
[Matsuyama Seiji] Tanomu to Sex Shite Kureru Boku no Yankee Onee-chan. [English] [Digital]
[Seiji Matsuyama] Bukkake Vol. 01
Young Champion Retsu Vol.10 (2008-01-25 Zoukangou)
Otona no Eiken
[Matsuyama Hayate] Nyotaika de Ecchi Kenshin!? Mirudake tte Itta no ni... 1 [Digital]
Lovers
Manga Bon 2012-09
Yarashite Kureru Gal Onee-chan.
56-sai Bust 256cm Danchizuma Ookiku Tareta Jukujo no Chibusa... Boku wa Kono Hito de Doutei o Sotsugyou Shita.