It started off with a weak protagonist so seemed kind of boring in the beginning but really delivers his worth by fighting all of them, surviving and solving the mystery.
Starting 4 episodes narrates as if the anime is all about action with very weak action scene but the story gets interesting when the blame game starts.
Last episode final scene was a game changer and has me up for season 2.
Also, I love the little romance with action in the anime. Hope to see more action and mystery from it in the future seasons.
Seems like there is enough material for season 2 so can't wait for season 2!