Well then, I am not the biggest reader of system type of stories or isekai, but I do read a few like Shield hero, Arifureta, Re:zero, or Overlord.
With that said let's begin, shall we.
First off, the setting, it's very well done and quite the attention grabber right from the start, now the characters they are well made, well written, engaiging and funny!
Now, the writting is good, but it needs work grammar wise (and don't get the wrong idea, I am a strong believer that bad grammar, dosen't hinder a story, nor renders it like many say "unreadable" That is not something that in my opinion hinders a good story and it can be fixed with ease, and me too I make mistakes, lot's of them)
All in all, this is a good story with great potencial, and don't let the few grammar mistakes will ruin it for you!
As for the Author keep it going, my friend you have something good here!