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Young Champion Retsu Vol.16

[Matsuyama Seiji] Azusa-san ga Ore no Yome de Eiken Mitai na Chou Bakunyuu dattara (THE iDOLM@STER) [Digital]

[Matsuyama Hayate] Nyotaika de Ecchi Kenshin!? Mirudake tte Itta no ni... 6 [Digital]

[Matsuyama Seiji] Oba x Boku - 41-sai Komochi no Shufu ga Doutei no Boku ni Tanomikomarete Shikatanaku...? Sex Shita Hanashi [Digital]

Otona no Zokusei Late2015

[MANA-KO] Cinderella Scandal

Young Champion Retsu Vol.09

Young Champion Retsu Vol.14

[Matsuyama Seiji] Misoji Idol Takahashi Reiko-san no Yawarakai Oppai de Kyousha (THE IDOLM@STER CINDERELLA GIRLS) [Digital]

[Teruyo] 私たちの猥らな生活。

Young Champion Retsu Vol.11 (2008-03-30 Zoukangou)

[Matsuyama Seiji] Kinjo no Chuugakusei no Otokonoko ga Watashi no Mune o Chirachira Mite kuru node... Sex o Shite ageta Hanashi. [Digital]

Hajimete no Furin Onsen

[Onushi] Hon Suki (Fuyu) 2 (Honzuki no Gekokujou)

(C83) [Ponzu Ame (Amezawa Koma)] Himeko-chan ni Onegai desu 2 [Chinese] [Lolipoi汉化组]

Yarashite Kureru Gal Onee-chan.

Young Champion Retsu Vol.10 (2008-01-25 Zoukangou)

Gibo-san wa Tennen-mi 10

(C81) [PLANT (Tsurui)] Colorful Ritsuko (THE IDOLM@STER)

Young Comic 2008-12

Seiji Matsuyama Onegai Anna Senensei

[.7 (DAWY)] Futanari Sakuya-san 2 (Touhou Project) [Digital]

[Hidemaru] Urechichi Kurabe Ch 1-4

[Matsuyama Seiji] Eiken Makaizou (Eiken) [English] [Mongolfier] [Digital] [Incomplete]

使い捨てティッシュ

Young Champion Retsu Vol.07 (2007-07-25 Zoukangou)

(C52) [Kaiten Sommelier (13.)] 3 Kaiten (Final Fantasy VII, Bishoujo Senshi Sailor Moon)

Young Champion Retsu Vol.02

[Ribons Nights (Kyouno Aki)] Koisuru Matsuyama-san [Digital]

お母さんいただきます。2 連載 P1-40

Young Champion Retsu Vol.05

[LOVE (Kawai Hideki)] Disappear (Death Note)

50歳パートの普通のおばちゃん……だがそれがいい

Onegai Anna Sensei New Chapters

[Hakase] 2022 nenban tadashii (da) ki kata (Dragon Ball Z)

[Matsuyama Seiji] Otona no Eiken Kirika ~Chibukuro yori Ai o Komete~ | Eiken Adult Kirika ~With Love From the Milk Bags~ (Eiken) [English] [Digital]

Young Champion Retsu Vol.13

Nyotaika de Ecchi Kenshin!? Mirudake tte Itta no ni... 2 | Gender Bender Into Sexy Medical Examination! You said that you were only going to look... 2

[Matsuyama Seiji] Otona no Eiken Kirika ~Chibukuro yori Ai o Komete~ (Eiken) [Digital]

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

[Matsuyama Seiji] Eiken Makaizou 2 (Eiken) [Digital]

[Matsuyama Hayate] Nyotaika de Ecchi Kenshin!? Mirudake tte Itta no ni... 3 [Digital]

Otona no Eiken ~Shinonome Chiharu 26-sai~

Nyotaika de Ecchi Kenshin!? Mirudake tte Itta no ni... 4 | Gender Bender Into Sexy Medical Examination! You said that you were only going to look... 4

[Matsuyama Hayate] Nyotaika de Ecchi Kenshin!? Mirudake tte Itta no ni... 5 [Digital]

(C47) [NICO NICO COMPANY (Takamura Yoshiyasu)] Yoshiyasu Magazine VOL.20

[Matsuyama Seiji (Matsuyama Seiji)] Oppai Momu? [Digital]

Otona no Eiken

[Matsuyama Seiji] Otona no Eiken ~Shinonome Chiharu 26-sai~ (Eiken) [Digital]

Nyotaika de Ecchi Kenshin!? Mirudake tte Itta no ni... 6 | Gender Bender Into Sexy Medical Examination! You said that you were only going to look... 6

(C81) [BOBCATERS (Hamon Ai, Matsuyama Seiji)] Yukiho Shinken (THE iDOLM@STER)

Young Champion Retsu Vol.12 (2008-05-25 Zoukangou)

I Have a Dream

Tanomu to Sex Shite Kureru Yankee Onee-chan.

Gender Bender Into Sexy Medical Examination! You said that you were only going to look... 2

[Matsuyama Seiji] Eiken Makaizou 4 (Eiken) [Digital]

Young Comic 2008-09

[Matsuyama Seiji] 50-sai no Haha ga Erosugite Nakadashi Sex o Shite moratta Doutei no Boku [Digital]

Young Comic 2008-10

Oppai de... Icchau no?

Kinjo no Chuugakusei no Otokonoko ga Watashi no Mune o Chirachira Mite kuru node... Sex o Shite ageta Hanashi.

Cellular Control 12

[Matsuyama Seiji] Eiken Rensai Kaishi 10-shuunen Kinen Bon Kaiteiban Sai (Eiken) [Digital]

Otona no Eiken 〜 Shinonome Chiharu 26-sai 〜

Sexy Undercover Investigation! Don't spread it too much! Lewd TS Physical Examination Part 1

(C81) [BOBCATERS (Hamon Ai, Matsuyama Seiji)] Yukiho Shinken (THE iDOLM@STER) [English] [Tigoris Translates]

Glory of the Fox God

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

Eiken Adult Kirika ~With Love From the Milk Bags~

Eiken Rare Illust-shuu

[Yamamoto] Videl vs Spopovich (Dragon Ball Z) [English][Colorized][Ongoing]

Nyotaika de Ecchi Kenshin!? Mirudake tte Itta no ni... 3 | Gender Bender Into Sexy Medical Examination! You said that you were only going to look... 3

(C91) [Matsuyama Seiji] Ura Eiken ZERO Remake (Eiken)

Eiken Makaizou 3

βLupi sample

[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]

[Matsuyama Seiji] Yarashite Kureru Gal Onee-chan. [Digital]

50-sai no Haha ga Erosugite Nakadashi Sex o Shite moratta Doutei no Boku

The First Summer

(C87) [Origami Farm (Nei Chi)] SEX AND THE Miare City (Pokémon)

[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.17

[Matsuyama Seiji] Loli-gao de Kyonyuu na Okaa-san ga Boku no Hatsutaiken. [Digital]

Otona no Eiken Kirika ~Chibukuro yori Ai o Komete~

Gender Bender Into Sexy Medical Examination! You said that you were only going to look... 1

[Matsuyama Seiji] Onegai Makoto Sensei (Space Battleship Yamato 2199) [Digital]

[Seiji Matsuyama] Bukkaｋe Vol. 01

Gyanko no Hayaben Copy Bon deshou ga! | It's a book about Gyanko's pre-lunchtime bento!

Nyotaika de Ecchi Kenshin!? Mirudake tte Itta no ni... 5

Oppai Momu?

[Seiji Matsuyama] Ura Eiken ZERO (Eiken)

Otoko no Risou wa Sex Dekiru Okaa-san

[Matsuyama Seiji] Otona no Zokusei Late2015 [Digital]

30-Sai Imouto

[Matsuyama Seiji] 50-sai no Haha ga Erosugite Nakadashi Sex o Shite Moratta Doutei no Boku. [English] [Fated Circle] [Digital]

Birthday X Present (Ch.4) [FINAL]

Eiken Makaizou 2

[anthology] Breath Special Tokushuu Loli-Shota

[Matsuyama Hayate] Nyotaika de Ecchi Kenshin!? Mirudake tte Itta no ni... 4 [Digital]

Young Comic 2009-07

Seiji_Matsuyama-Onegai_Anna_Sensei (5-8) small ver.

DisSpa!!! Ukemi-chan no Hajimete no Spanking Oshiri Penpen

Young Comic 2008-07

Part no Misako-san Mune o Chirami Shite Kuru Shinjin-kun ni Fudeoroshi Shite Ageru no Ga o Suki

Eiken Rensai Kaishi 10-shuunen Kinen Bon Kaiteiban Sai

Sexy Undercover Investigation! Don't spread it too much! Lewd TS Physical Examination Part 2

Iiko Iikoto Kimochi Iikoto | 好孩子舒服的事欲罢不能的事情

Gender Bender Into Sexy Medical Examination! You said that you were only going to look... 3

Young Champion Retsu Vol.06

[Matsuyama Hayate] Dokushin Ryou no Hame rare Omocha ~ Osoujichuu ni Guchi ~yogu choshi naide…! [Kanzenban]

Manga Bon 2012-12

（周4）S-Mate 1-50 中文翻译（更新中）

(C85) [Matsuyama Seiji (Matsuyama Seiji)] Eiken Makaizou (Eiken) [Incomplete]

56-sai Bust 256cm Danchizuma Ookiku Tareta Jukujo no Chibusa... Boku wa Kono Hito de Doutei o Sotsugyou Shita.

[Momoiro Kageboushi (Nazuna)] Wagaya no Loli Succubus [Digital]

[Inukai] 女体化桃太郎まとめ

[Matsuyama Hayate, Hitotsuki Katagiri] Sexy Undercover Investigation! Don't spread it too much! Lewd TS Physical Examination

[Matsuyama Seiji] Eiken Makaizou 3 (Eiken) [Digital]

[Matsuyama Hayate] Gender Bender Into Sexy Medical Examination! You said that you were only going to look... 1 [English] [SachiKing] [Digital]

Young Comic 2009-01

Eritama! - eri love middleage

[Matsuyama Seiji] Yarashite Kureru Yankee no Mama [Digital]

[Matsuyama Hayate] Nyotaika de Ecchi Kenshin!? Mirudake tte Itta no ni... 1 [Digital]

Eiken Makaizou 2

Manga Bon 2012-06

Young Comic 2009-01

Young Champion Retsu Vol.04

Sexy Undercover Investigation! Don't spread it too much! Lewd TS Physical Examination

[Matsuyama Seiji] Onegai ♥ Anna-Sensei

Young Champion Retsu Vol.15

Young Comic 2008-08

Ingan Giga Ch. 1