I Kept Pressing the 100-Million-Year Button and Came Out on Top, Vol. 1 (light novel)

This is easily one of the worst things I have ever read, and I've read a lot of garbage. It's not even consistent as a power fantasy wank, because by the end of the volume he almost gets his ass kicked anyway despite him supposedly training for a billion years or whatever. An embarrassing effort by the author, who has no sense of scale when it comes to time (he should've trained for 500, maybe 1,000 years instead). Yen Press must have gotten this for dirt cheap, because otherwise they got ripped off.