The first 3 chapters remind me of a more lad back version of "Tales of the world devouring serpent", but there isn't this sense of needing to become stronger to survive, .

It's... not the worst thing I've read, but not great either. It definitely feels like a young author's early work... pretty good if that's true!

The MC isn't afraid to kill people, fortunately. He goes from drinking blood no problem to "finding carrion nearby" which happens to match the dead bodies he kills, so I'm not sure if it's a censorship thing or what... gets rather annoying though.

The MC is obsessed with some girl he hasn't seen since elementary school because she somehow liked him for years without saying anything? He... more>> also builds animal harems but emphasizes that he won't breed with them despite calling them concubines and what not.

The system and skills and pretty arbitrary and inconsistent, and every event is based purely on MC timing (as well as reader feedback). Despite all of that, I did make it over 100 chapters. If you're desperate for a monster evolution novel where MC is willing to kill humans, may as well give it a try. <<less