first off I like this WN (not sure why though). Now that I have said that I will try to give a fair evaluation of the WN so you can decide if it is the kind of story you would like.
First off look at the tags. I will tell you now that all of the tags are relevant to the story except for the card one that is a gray area as in this is not a card game story like Yu-Gi-Oh. Ok if you don't like any of the tags this is not for you and you probably don't need to keep reading this post. If you like some of or most of these tags keep reading this post.
Like the title says this story is a harem story and they are slaves. If you don't like ether of these then this is not a story for you.
The MC can be considered OP since he does have a cheat ability, so if you don't like OP characters then you might not like this story but if you don't like them but can put up with them you (like me, I wanna see them struggle sometimes) then you may still like this. As a side note he is not OP all the time
poiler]but since he doesn't get into fights that he is at a major disadvantage and that he may lose, so he is pretty much OP
The MC is an idiot, not intelligence wise, but socially, and can be dense. If you can't deal with this then this might not be for you.
The chapters up to the first slave are slow since he is adapting to the new world and gathering money for her. Some people like this and some don't. Also the author takes time explaining things and can sometimes slow the story down some in the beginning but it gets better in later chapters. If you can stand this or don't mind then you may like this, if not you may get annoyed and drop it.
The MC only cares for those who are important to him and could care less about anyone else. Basically he is not a hero going around saving everyone, with the exception of his slave/s
though he doesn't let them get into any serious danger since he is cautious
Other then what I said you will have to decide for yourself. If you do decide to read this DON'T read the original translation of the first few chapters, read the re-translation of them. The original translation of the first few chapters would make you drop it by quality alone.
Hope this helps you decide wether to read it or not.