Cyril is so stunned by that that for a moment, he simply stares. Then, after a moment, "Okay..." He has to take a moment to process that Vash still hurts from that. And he has to put aside whatever he thinks about it to focus on what Vash needs. Slowly, he moves to put a hand on Vash's back.

"You did kill someone." A monster, he stops himself from saying. He thinks about all of the people he's killed, and if he even cares a little bit about them. Maybe that says something about him, though, not about Vash.

Honestly, he has to clamp down hard on his own emotional reaction to this moment, because he's teetering on being hurt and frustrated by it.

"And... you want that to define who you are for the rest of your life?"