Tsume listens, watches, and waits to see what the man will do. When the gun goes up, his head and chest appear to the side of the bush, now more clearly seen. There's a very large X-shaped scar on his chest, so it's clear that Tsume isn't going to trust him just right off the bat.

In any case, it's clear that Tsume definitely understands the man's words, or at least his intentions. He stops snarling and waits to see what Cabal will do next, golden eyes still watching him carefully.