Just spent the last two or three days reading this from ch 1. Had to go to other sites to read some of it.
The main protag does not seem to actually have to try for anything at all. Shit just slides into his lap on a platter. Not one of his plans gets interrupted or waylaid or anything. He feels cheap as hell. Not even in the fun way like OPM. And even OPM knows that Saitama is the clean up crew after having a wide and interesting cast fight the latest big bad first.
This guy is one of the Mary Sue-est douche canoes I've ever read about.
That said, it does have a few funny moments. The girls are attractive and the story is JUST, just barely engaging enough that it's got me to read entirely.
It's like a crappy show you start watching but can't stop because you've already invested time into it, might as well see where it goes and what happens.