[Matsuyama Seiji (Matsuyama Seiji)] Oppai Momu? [Digital]
[Amanagi Seiji] Koishi no Rival (COMIC Penguin Club 2012-01) [English] [SMDC] [Digital]
(CWT32) [O-Penguin (Ramen-Penguin)] A Beast Tamer's Special Event (Sword Art Online) [English] [EHCOVE]
[MEAN MACHINE (Seijiro Mifune)] LOVERS DREAM (DREAM C CLUB) [Digital]
[Amanagi Seiji] Shiranai Sekai (COMIC Penguin Club 2018-01) [Chinese] [沒有漢化] [Digital]
[The Seiji] The Shiro Muchi - Yawahada Chookyoo Manual -
[Amanagi Seiji] Imouto Switch (COMIC Penguin Club 2015-06) [Chinese] [CE家族社] [Digital]
[Matsuyama Seiji] Eiken Makaizou (Eiken) [English] [Mongolfier] [Digital] [Incomplete]
[Amanagi Seiji] Pinky 2 (COMIC Penguin Club 2013-02 Vol.318) [English] [SMDC]
[Amanagi Seiji] My Juliet (COMIC Penguin Celeb 2011-12) [English] [SMDC] [Digital]