It'd just be Ryu vs the rest of the ninjas, everyone else would pretty much be a nonfactor. Maybe Rig, he did stalemate hayate after all.
lol no one would stand a chance against Ryu, not even all the ninjas going at him at the same time lmao
He wouldn't kill any of em lol. We're just talking about in theory, tbh Momiji would probably last longer than the rest of them considering she trains with him.