Its ironic (or maybe strangely fitting), but Izumi is without a doubt the most inhuman character in the manga - INCLUDING the aliens. He's totally devoid of feelings of mercy or compassion.
Thats not comparable to Kurono. Even in the beginning, he had compassion and humanity underneath his selfish attitude.
Izumi, blah. He's the true monster here.
I'm at 180. Please tell me Kurono or anyone else get that arrogant, heartless guy down a peg or two in the future. Izumi never had humility forced down his throat. He needs it. Badly.