Asriel's nose bumps under her chin, and he mimics the sound back - it's a little loud, interrupted by the occasional pained sound. He can't take it back, he can't reset anymore. It's too late, he's already become what he was trying so hard to avoid.
"I won't hurt a human. I promise. I'll never, ever hurt a human again."
spoilers forever
"I won't hurt a human. I promise. I'll never, ever hurt a human again."