On the day the stars fell, the multiverse was reborn anew.

This is the story of a man's quest to reach the pinnacle. A grand saga that starts with a young boy's life twisted by the ploys of the unknown. Granted a mysterious power with endless potential, watch as this lone existence takes the world by storm, grab fate and destiny with their bare hands, and rule over the countless realities that propagate the infinite multiverse.

Through brute strength and trickery, ruthlessness and charm, Freidrich Braun will achieve his desired dream no matter what stands in his way.

...

In a nutshell: Psycopathic kid given a chance to strive for greatness.

Also, yes, I wrote that goofy fanfic Final Boss of the Multiverse on Webnovel, don't judge me. I was an inexperienced wrtier back then with tons of trash ideas in mind, but things are different now, for real.