that credit page seems really inappropriate...
but thanks for the chapter. dunno how he, or the world in general, calculcates magic power. i guess everyone was limited by depleting internal magic, so in an instant they used up alot, while taking a bit of time our MC could accumulate an enormous amount? well, let's see how much damage it will do, if he isn't stopped or is canceled. firing towards the sky could be an option as well i guess.