[Knives lifts a foot and places it on Vash's back, purposely digging his boot into the marks on his back. He leans into it, placing some of his weight there as he leans in. The blade he created ends up pressed against Vash's cheek. He doesn't cut, just yet, it's only enough to make an impression on the skin.]

I do know what's best. And it's so lovely to hear you say it.

[He presses the blade in and it cuts his brother's cheek, more blood dripping down from the wound.]

No more fighting, no more struggle. You'll do exactly what I say now, won't you, little brother.