COMIC Penguin Club Sanzokuban 2012-12 [Digital]
COMIC Penguin Club Sanzokuban 2013-01 Vol.288 [Digital]
[Ishigami Kazui (RED CROWN)] Oshiete Sensei (COMIC Penguin Club Sanzokuban 2011-03)
(C70) [Doom Comic (Shingo Ginben)] G-class II
COMIC Penguin Club Sanzokuban 2007-07
[Ishigami Kazui (RED CROWN)] Onee chan to Yonde!? (COMIC Penguin Club Sanzokuban 2010-06)
[Ishigami Kazui] Osananajimi ni Onegai (COMIC Penguin Club Sanzokuban 2011-06)
[Ishigami Kazui] Tsundere-san to Otaku-chan | Tsundere-san and Otaku-chan (COMIC Penguin Club Sanzokuban 2011-09) [English] [EHCove]
[Ishigami Kazui (RED CROWN)] Kawaii Imouto no Kyougaku na Yuuwaku (COMIC Penguin Club Sanzokuban 2011-05)
COMIC Penguin Club Sanzokuban 2013-02