@danich182 This is official. This manga is the adaptation of the light novel (there are 6 volumes and still on going). The writer is Narita, the guy who write baccanoo and durararara.
@danich182 It's official, though the LN's volume 1 was originally written as an april fools joke I think. So that's why the premise is so parody-like and it's referencing stuff from all over the Nasuverse.