[Sasuke approaches with caution, hanging back some distance as he mentally catalogues the situation and everything available to him to use in the event of his own self-defense. It seems that presently, Naruto doesn't view him as an enemy, but understanding his friend's nature he knows that mood could fluctuate with the Nine Tails' interference. Susano'o comes to mind first—it's an option, even if it may backfire or severely drain him of what unreliable chakra is in his own reserves. It's also a technique he's yet to test here. Trial by fire, fortunately, is no new concept.

A good thing they're not in proximity to Stygia's population; at least this way, damage to the surrounding area won't matter as much.]

No. [Sasuke holds his ground, foot nudging the head as it's rolled toward him to halt its momentum. He doesn't interact with it otherwise; that could be seen as an encouragement.] We already decided, or don't you remember? We'll fight later. It won't be satisfying enough for you with how I am right now.

Why are you worked up? These monsters weren't a challenge at all.