Gangan Online

Gangan Online (月刊少年ガンガン) is a Japanese web manga magazine published by Square Enix. Two chapters of Toaru Nichijou no Index-san are released every month, one in Monthly Shōnen Gangan, and the other in Gangan Online later in the month.

List of works

 * Toaru Nichijou no Index-san (2013-2016)