I'm positive the Author made this out of boredom, because I can't picture how someone can write such a soulless story.
I'll give it the benefit of the doubt and go a bit further beyond the chapter where the MC beats the slave elf effortlessly, because some guy said it does get better later on (that same guy gave one of the best reviews I've ever read so I feel like trusting his insight).
So far though, I've been successfully predicting most of the next pages along with some eye-rolls, it is generic but not in a good way.
Being honest, so far I hate the MC as much as I hate his party members, of course I hate the Hero more but MC's decisions have been making me tweak a lot and even more than the assholes of his party.