Ah okay so that's what lead into the attack on Mizuki. When I first started reading years ago, I was under the impression that Mako sort of set Mizuki up but didn't expect things to escalate. Good to know she wouldn't do that to a friend.
I mean, he got a line drawn across his neck instead. Traumatized Mizuki but still a pretty good way for such a scumbag to go, especially he definitely had time to think about himself dying while it happened.