[Shun hums slightly as if to say that he understands what she means when she just trails off like that. Even if it helps in some way to know, contextualising behaviour and things like that, it's not necessarily helpful to one's actual mental state to have the specifics.

He can't even really judge what follows, either, simply giving a shrug.] That's something. A lot of the people I've fought in the past were younger than me, so I had to make that kill or be killed choice even if it was a child, or at best a young teenager. So I don't have a moral high ground to hold over anyone about that.

[An innocent child, sure, but even then, he can't say he hasn't seriously harmed innocent people around Ruri's age, and he still considers her a child.]