COMIC Penguin Club Sanzokuban 2012-12 [Digital]
COMIC Penguin Club Sanzokuban 2012-07 Vol.282 [Digital]
COMIC Penguin Club Sanzokuban 2007-07
[Ishigami Kazui (RED CROWN)] Onee chan to Yonde!? (COMIC Penguin Club Sanzokuban 2010-06)
COMIC Penguin Club Sanzokuban 2013-04
(C92) [Hogero Kikaku (Hogero)] iXam@s NX2 (THE IDOLM@STER CINDERELLA GIRLS)
[Ishigami Kazui] Tsundere-san to Otaku-chan (COMIC Penguin Club Sanzokuban 2011-09)
[Ishigami Kazui] Tosho Iinchou no Shitsumon (COMIC Penguin Club Sanzokuban 2010-07) [English] [EHCove]
[Ishigami Kazui (RED CROWN)] Kawaii Imouto no Mukuchi na Yuuwaku (COMIC Penguin Club Sanzokuban 2010-12)
[Ishigami Kazui] Sokonashi Seiryoku Kaihou Sengen