Kaworu shakes his head slowly, his head bowed and eyes closed.

"I have no desire to fight you, much less kill you. You're my dear friend." There's a dark heaviness inside him as he answers - it's clear enough what Billy thinks of all this. It's that part which hurts him - not the bare facts of who he really is, but the reaction that Lilim have towards it. And how can he blame them? Kaworu are natural enemies, and they have every reason to fear him. It's ignorance not to be scared of him.

Still, Kaworu wants to try to set him at ease again. "I have never been insincere to you. These are not things I talk about with Lilim, but you earned my trust. Please, put your faith in the side of me that you already know, and listen to the rest of my story."