[Matsuyama Seiji] Otona no Zokusei Late2015 [Digital]
[Matsuyama Seiji] Eiken Makaizou 4 (Eiken) [Digital]
[Matsuyama Seiji] Otona no Eiken ~Shinonome Chiharu 26-sai~ (Eiken) [Digital]
[Matsuyama Seiji] Eiken Rare Illust-shuu (Eiken) [Digital]
[Kio Seiji] Tokumei Shoujo
[Matsuyama Seiji] Onegai Makoto Sensei (Space Battleship Yamato 2199) [Digital]
[Matsuyama Seiji] Misoji Idol Takahashi Reiko-san no Yawarakai Oppai de Kyousha (THE IDOLM@STER CINDERELLA GIRLS) [Digital]
[Matsuyama Seiji] Loli-gao de Kyonyuu na Okaa-san ga Boku no Hatsutaiken. [Digital]
(C86) [Zettai Shoujo (RAITA)] Zettai Junpaku Mahou Shoujo ~JRPG Ishou desu~
(C91) [Matsuyama Seiji] Ura Eiken ZERO Remake (Eiken)