COMIC Penguin Club Sanzokuban 2008-03 Vol. 230
[Ishigami Kazui] Tsundere-san to Otaku-chan (COMIC Penguin Club Sanzokuban 2011-09)
[Ishigami Kazui (RED CROWN)] Natsu to Test to Osananajimi (COMIC Penguin Club Sanzokuban 2010-08)
[Ishigami Kazui (RED CROWN)] Tosho Iinchou no Shitsumon (COMIC Penguin Club Sanzokuban 2010-07)
COMIC Penguin Club Sanzokuban 2012-12 [Digital]
[Ishigami Kazui] Sokonashi Seiryoku Kaihou Sengen
COMIC Penguin Club Sanzokuban 2007-09
Sideroca Kanrishite Hen
[Ishigami Kazui (RED CROWN)] Onee chan to Yonde!? (COMIC Penguin Club Sanzokuban 2010-06)
COMIC Penguin Club Sanzokuban 2013-10