Man, jsut looking at the title and image, I already know it's gonna be some average boring mess...
Edit :
Just as expected, It's not even an actual story but some form of parody.
Chapter 3.9 sums it up perfectly, this whole thing is a joke.
Honestly, if you think of it as a parody, the story actually gets somewhat fun to read, don't take any of the plot seriously and just think of it as some average comedy manga and you'll be ok with it.
I'm serious, that mengyo kaiden shit the author randomly pulled out ? It's not gonna be worth shit in front of a mc that can one punch a mountain away.
Jsut ignore it all and skip through it, it's the best way to treat that kind of manga.