was this manga realise after the movie? like its an adaptation?

the original is the light novel, the manga and movie are adaptations of that

ooooh okay, do u knoe where i can read the light novel??

well right now all of the light novels are being translated by Yen Press and DA should be coming out (hopefully) on Dec 1 on Amazon. I don't know if anyones translated the light novels aside from the official ones that are coming out.

thank youuu