[There is a blink, and another, and then his eyes narrow.]

Huh. Is that what happens when people 'die' up here? I...don't think I've actually met your shinki really.

[Give him a moment to think, because while he's not actually suspicious of them, he's not going to rule that out entirely. It's one of the least likely scenarios though, so his mind turns towards other aspects of the matter.]

The way you're phrasing it though, suggests it was likely a deliberate act and not an accident, with regards to this killing.