[Ishigami Kazui (RED CROWN)] Kawaii Imouto no Kyougaku na Yuuwaku (COMIC Penguin Club Sanzokuban 2011-05)

[Ishigami Kazui (RED CROWN)] Sensei tteba Maji Tenshi! (COMIC Penguin Club Sanzokuban 2012-01)

[Ishigami Kazui] Onee-chan to Yonde!? (COMIC Penguin Club Sanzokuban 2010-06) [English] [HeiXYin]

[Ishigami Kazui] Tsundere-san to Otaku-chan (COMIC Penguin Club Sanzokuban 2011-09)

[Ishigami Kazui] Tsundere-san to Otaku-chan | Tsundere-san and Otaku-chan (COMIC Penguin Club Sanzokuban 2011-09) [English] [EHCove]

[Ishigami Kazui (RED CROWN)] Oshiete Sensei (COMIC Penguin Club Sanzokuban 2011-03)

[Ishigami Kazui] Sokonashi Seiryoku Kaihou Sengen

[Ishigami Kazui] Osananajimi ni Onegai (COMIC Penguin Club Sanzokuban 2011-06)

[Ishigami Kazui (RED CROWN)] Tosho Iinchou no Shitsumon (COMIC Penguin Club Sanzokuban 2010-07)

[Ishigami Kazui] Seito Kaichou wa Ero Mangaka (COMIC Penguin Club Sanzokuban 2010-09)