[Pain flares from his knee, a fucking unearthly amount of pain-- he's calm even with this body's (isn't it really his to claim after so long??) kneejerk reaction to move away from the pain. So he forces himself to do the opposite and lets that knee come forward to crush that hand beneath his weight but- but that's not flesh beneath him....

What the fuck. Kira snaps out of it at the sound of unfamiliar, hollow laughter and ah, look, blood. He's got his listening- well, thinking cap on when more pain nearly crushes his knee. He can't stop the grunt of pain before it slips out of his mouth either because fuck that hurts.
Now, he's not exactly worried either. A few broken body parts aren't an issue when you've got angelic magic damning you. However this significantly changes his calculations about this wayward stranger stupid enough to break in here.]

You honestly expect me to believe they wouldn't send someone who can hide their powers to flush him out. [Kira's voice is actually tinged with some humor through the pain. Then it dips dangerously low--]

If you think I wouldn't die for him again just to keep leaks on his whereabouts silent then you aren't just fucking stupid. You're horribly misinformed. And it's going to cost you your life.

[He's quick to grind the foot belonging to the very knee that's screaming at him when he brings it right into the wound this man has been favoring.] Why do you think she and I were such a good match against you angelic bastards? I cut down every one of my masters except her. Not even a nick.

[Oh, but he wanted a taste.] But what I wanna know is...did you know I was here? Surely I've been left as a legend by now.