First off, a good introduction. The mystery of what's going on is presented in a manner that doesn't make me feel like I need to know more, but rather that I want to discover the answers as the story develops. The glimpses of the expanded setting outside of what our MC experiences paints an interesting picture as well. We know where at least three of the four human cast are, in broad terms, but the specifics are far from known. On the other hand, the GM is a concerning character. He doesn't seem malicious, but very amoral so far. Same for those classes and the blood gauge.

Welp, we can only see where it goes from here.