[Matsuyama Seiji] Eiken Rare Illust-shuu (Eiken) [Digital]

(6tsugo no Tamashii Forever 4) [MatsuCha. (Maccha)] Sono chiryou-hou wa machigatte imasu | This Treatment is Wrong (Osomatsu-san) [English] [Rotti Totti]

(Kahou wa Nete Matsu 10) [MatsuCha. (Maccha)] Jinan ni Hatsujouki ga Yatte Kita no desu ga Taihen na Koto ni Natte Imasu. | The Second Son's Heat Came Now There's Big Trouble (Osomatsu-san) [English]

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

(Osoroi no Koi dakara 2) [MatsuCha. (Maccha)] Ouji-sama! Chou Nigete! | Prince! Hurry and Run! (Osomatsu-san) [English]

(Kahou wa Nete Matsu 6) [MatsuCha. (Maccha)] Present o Mawasou! | Let’s give a present! (Osomatsu-san) [English] [Rotti Totti]

(Kahou wa Chou Nete Matsu Kansai 22) [MatsuCha. (Maccha)] Mahou no Onaho to Tsunagacchatta Karamatsu no Hanashi! | The Story of Karamatsu Connecting with a Magical Onahole! (Osomatsu-san) [English] [Rotti Totti]

(Kahou wa Chou Nete Matsu Kansai 22) [MatsuCha. (Maccha)] Onaho Yousei Karamatsu o Te ni Ireta Ichimatsu no Hanashi! | The story of Ichimatsu who got the onahole fairy Karamatsu! (Osomatsu-san) [English] [Rotti Totti]

[MatsuCha. (Maccha)] Matsuno-ka jinan wa kyoudai ga daisuki | The Matsuno Family’s Second Son Loves His Brothers (Osomatsu-san) [English] [Rotti Totti]

(Kahou wa Nete Matsu Spark 11) [MatsuCha. (Maccha)] Mahou no Onaho to Tsunagacchata Karamatsu no Junan! | The Passion of Karamatsu Connecting with a Magical Onahole! (Osomatsu-san) [English] [Rotti Rotti]