Core Magazine owns a bookstore chain "Core Books" (コアブックス?).
In July 2002 a special issue of Bubka magazine featured unauthorized childhood photos of several female idols, including Norika Fujiwara, Kyoko Fukada, and Natsumi Abe. A suit was started against Core Magazine for privacy violation.
It 2009 it was the top ero-manga publisher in Japan, with 76 titles, beating Akane Shinsha which only had 65.
In July 2013, the head editor, Akira Ota, and the two staff members are arrested for having their manga shown partally uncensored. He pleaded guilty in December 2013 and apologized for his irresponsibility.