I know that killing is wrong, especially human souls, souls we once swore to protect. But... what we could have done? We are talking about the souls of the damned. Uncle was burning with power and thirsting for war, and he was going to rise up against us and destroy us; to every angel or human soul in the multiverse. Heaven, whether they were men, women, or children. We had to worry about our own people; the innocent souls who have earned their wings. I totally agree that exterminations are a crime, but... it's necessary... If we don't keep them in line, then they will rise again and destroy the Heaven, and that It's something I can't allow. I won't let that happen, because I care about my own people, and that's something my brother doesn't do there.