[Okay, so a philosophical discussion. This he can do, if only because it can give him more insight on how Mizuki thinks. He's a friend for sure, but between his capability of terrifying violence and attachment to Ebalon of all people - Natsuno still doesn't really understand him.]

He wants to become a god. I'd say that usually indicates someone's lost touch with reality. And if he sees himself as a god in the making, then us "lesser" lives are nothing to him.