Gray Morality

This manga managed to show a gray area in morals, you can't help but feel hatred and the desire for humanity's genocide on one hand for what they did to Chloe, but when you get the to see the side of the witches they aren't as good as you thought they were.

In the end it's up to perspective and the readers to determine NOT WHO IS GOOD OR RIGHT, but WHO WILL YOU SIDE WITH.

Adonis has a good rational reason to hate humans obviously and not one-sidedly believing that all witches are allies is in fact logical. People who call him insane or crazy, okay perhaps that's the part of the battle and theme but in that situation and circumstances pacifistic goodie-two shoes are goners, IT'S A FREAKING BATTLE FIELD Everywhere not just in a life or death way but also in believing who your ally is. Being an "asshole", yes he is, but so are the witches who want to revive Chloe just to use her to enslave humanity, they didn't do it out of the goodness of their hearts.

This portrays that no one, well except Doroka for now maybe, and Chloe, is good, everyone even Adonis can be bad.