Shame on me for thinking that unloading a clip of a normal gun would do some actual damage on someone who's as brick-headed as he was. It's pretty random but I like how his blade claws lining the entirety of his fingers so his mere grip can shred a person to ribbons. It's badass and I've never seen anything like that before that I can recall.
I hope that he'll spare Masaru since he was the only one who wanted to spare the Onion kid.