Bessatsu Manga Goraku

Cover

Japanese: 別冊漫画ゴラク

Size: B5
Cost: 350 yen
Release Date: Monthly; 25th
Circulation: 1982 - ?

Publisher: Nihon Bungeisha

Links:

Official Site

Info:

Though it was sold on a bi-weekly basis (released on the 2nd and 4th Wednesday), it became a monthly publication starting from the April 2009 issue (released on February 25th, 2009).