Not the first type of manga that tried this genre,
The main protagonist is an idiot with now self-awareness...
The science makes no sense... the conspiracy is such a big cliche...
Art is so so... you'll want to read it just because you hope it gets better but it never does... the ending is anticlimactic... makes you feel empty on the inside and the regret of wasting your time.

Rather than wasting your time on this garbage... Go read "Dr. Stone" at least there you can learn something, and if you want a good manga with primeval creatures go read "Cage of Eden" or "Sousei No Taiga"