It's really hard to review this manga, because it manages to be both awesome and "meh" at the same time.
The story is set in a (distant?) future, after the current civilization has fallen. The new one struggles with a world that was corrupted and turned into a nightmare, so most people live inside walled cities to hide from the monsters that roam outside. Hunters brave the outside world, exploring ruins of the old world in order to find relics of old technology.
The setting, a mix of Monster Hunter and Fallout, is a big plus. The author is going for a slow burn with it, so we still know barely anything about both the old civilization and the monster (we know only that they were created as weapons by the oldies). It kinda reminds me of another manga, The Arms Peddler, only less fantasy.

The art is really, really good. The artist did a great job, both with normal panels and "oh shit" panels.

The story is... well, there isn't much story yet. Protagonist finds his ghostly/virtual waifu and uses her guidance to become OP. Most of the events are or feel like cliche power fantasy to me, and if you think of the waifu as a cheat ability you get your usual run of the mill power fantasy story. However, the art and the tempo of the events make the experience more bearable, or at least less forgettable than "another isekai story".

What sets this manga apart from the rest, in my opinion, is how well the characters are written (at least so far). They're not pieces of paper, and so far they don't feel like walking tools/plot devices either. I usually hate with a passion harems, but while I have no doubt it will get to that point sooner or later, there is a sense of... maturity in the way this one is assembling.

So yeah, maybe an 8/10 is too high, but I don't regret it.

You don't see this type of thing often