(C77) [Penguindou] Penguin Club
[Amanagi Seiji] My Juliet (COMIC Penguin Celeb 2011-12) [English] [SMDC] [Digital]
[Amanagi Seiji] Fureau Do ni Koi o shite (COMIC Penguin Club 2013-11) [English] [SMDC]
[Momonga Club] shikishi zukan
[Amanagi Seiji] Shiranai Sekai (COMIC Penguin Club 2018-01) [Chinese] [沒有漢化] [Digital]
[Matsuyama Seiji] Otona no Eiken Kirika ~Chibukuro yori Ai o Komete~ | Eiken Adult Kirika ~With Love From the Milk Bags~ (Eiken) [English] [Digital]
(C69) [Wagahai Rouman-shuu, Igyou Nami Club (The Seiji, Ureshino Megumi, Waita Uziga)] Genkai Haretsu
[Amanagi Seiji] Gyutto Shite Wanko (COMIC Penguin Club 2012-03) [English] [SMDC] [Digital]
[Amanagi Seiji] Himitsu no Shukudai (COMIC Penguin Club 2012-05) [English] [SMDC] [Digital]
[Amanagi Seiji] Motto! Gyutto Shite Wanko (COMIC Penguin Club 2012-12) [English] [SMDC]