Frankly speaking it's something to just kill time, since the MC is a Mary Sue it doesn't matter what happens as she will just outsmart and overpower everyone. The villains in this are too black and white, it's the usual reincarnation trope where the MC has cool new stuff that noone has ever seen, but no one tries to use it or get on the MCs good side, or be morally grey, instead even tho they see she clearly is OP they try to go against her on numerous occasions just show how great the MC is. On topic of strength, no one questions the OP, she uses such a fuckton of techniques, items etc and everyone is completely ok with it, there's also no comparison of how strong she is, so the author can pull stuff out of his ass, the "you haven't seen my full strength", "I just remembered that great technique that will deal amazingly with this situation" and so on...
It's boring, the tension is pretty much 0 and the only fun is seeing how the MC deals with situations outside of beating everyone down, but because everyone is a little dum dum in this it's not as satisfying as it could be.
The art is alright, the romance is there but with it or without it it wouldn't really change much, the plot is divided into clear arcs, that's kind of alright as it's not a usual battle with stronger and stronger opponents only but later on it seems that that's what it will be.
All in all it's nothing spectacular, it's not terrible either, if you can get over the fact that everyone other then MC is stupid in this you can have some fun.