I would argue it is detailed. The images aren’t smudges of color and basic sketches. It’s also got a sense of flowing motion to the images when you go through them unlike some Manga that jumps from one scene to another with no interaction between images.
And your remark about ‘out of this world ‘, I intended it as a pun and it was appropriately implemented. The story gives hints about where it is heading to without giving away the ending. The scenarios the Mc gets into are also moderately balanced and not obviously one sided unlike many other stories. I also have not seen nor heard of another story about someone having to survive in outer space in a video game setting as an alien that evolves randomly. This is unique in its own way.
I’m my person opinion, the creator of this Manga is talented and put a good effort into this work. And I think it is fancy, especially when you look at how bad Manga can be. This is definitely way above average.