Yes. Anything else goes, because there's no such thing as honor in a real fight. [and he knows knights do so love their honor.

then, he goes on to add:] You can even try to hit me in the groin-- but only if you're capable of it.

[if he can catch nehan and hold him long enough to do it. but at this, with their height difference, nehan is more likely to do it to kaeya.

then he strikes out without warning, the back of his left hand aiming to connect with kaeya's face, just to see what he will do. and he doesn't bother to control the speed of his body.]