TL;DR: The story's good stuff. Give it a go!
The story attends to the adventures of a reincarnated person, who landed in the time and place of the main 'Danmachi' franchise. It contains minor elements of 'Solo Leveling'.
The MC is not riding the canon train and is minding his own business for the greatest part. While avoiding unwanted attention, he gets stronger with the help of his cheat system, making Bell's EXP grinding rates seem adorable!
The author is very much on point when it comes to the story progression, the action scenes and the several different stat numbers.
The unimportant data is filtered, making the story less tiring, bland and repetitive.
The MC possesses knowledge of most of the stuff that's going on and tends to act selectively and accordingly in regards to them. He doesn't always get involved with troublesome stuff when there is no need. Moreover, he doesn't hesitate and is very decisive when the situation calls for it.
The story seems to do justice to some side characters of the show. The MC chooses a minor Familia and they get their own development as well.
Lastly, the romance stuff is at check and I can't see the story getting led astray any time soon.
As a proud member of the No-Harem Sect, I want to believe!