The prologue chapter was really good in my opinion, a bit too long, but I feel like it covered all the ground necessary for us to understand the kind of world we're going into. It gave background of the virus and the war from it's development to the supposed end of the war. The concept itself is very anime like, which I don't mind cuz I like anime, but I hope it doesn't only follow the usual anime style concerning characters not having abilities in an ability world, kinda like my hero academia, looking forward to some cool twists. The writing is nice and easy to follow behind