Okay, well, to be honest the first time the thought crossed my mind that he might be was when he said, WAY at the beginning, that he he wasn't afraid of being betrayed, he was afraid to betray the ones he was close to.
But then I dismissed the idea that he was already an Orphenoc, because well... many reasons. Mostly I guess because I thought the series was foreshadowing him DYING and becoming one.
So I was surprised that he already was and knew he was.
ETA: Ooooooh, Kiba is onto you now, Kusaka. >D
Obviously not just that he lies. It's been obvious for a while that Kusaka is already an Orphenoc himself.
Wait wait... now it's being implied that he DIDN'T already know. He just... chose to become one right then? Just through sheer force of will? I'm so confused right now.