The book is ridiculous, featuring a foul mouthed “physicist” with a conveniently omniscient and omnipotent AI sidekick who is embedded fully into his brain.
Character leveling up is too fast and too unlikely; at only level 2, just a few days after being reincarnated on a strange new world, he successfully kills a giant psionic megabeast and gains like 4 levels from it.
So many issues with the novel that I’ve decided to abandon it.