EDIT
Ishigari Narshima
Not entirely sure that Jianna is okay, but taking comfort in the fact that she shown the strength to travel on her own before, Ishigari gives her a comforting smile and continues in a low voice.
"Whatever is going on, I am sure that we will be fine as long as we stick together."
He rests his hand briefly on her shoulder again before moving over to Kireyn, shaking his head briefly.
I am afraid I have never been trained as a tracker, and I am not sure it would be so easy in a town in any case. As for that blade, I do not believe I have seen one like it before.
He looks thoughtfully at it, straining his memory to what he had heard of darkfriends and the servants of the Dark One.
SpoilerIshigari has Knowledge: Shadow, if you feel like rolling for him. Specifically trying to remember whether he remembers any tales of blades that look like that being used by darkfriends and the like.