Su Xiao came to the battlefield of Sasuke and Danzo, not to watch, as he wasn't interested in seeing others fight, he preferred being in the action himself. His real purpose for being here was to wait for Naruto Uzumaki.
He did indeed wait for Naruto, but unfortunately, there were also dozens of Contractors with Naruto.
Who knows what the strength of these Contractors is like; some might be very weak, while others very strong. Furthermore, whether Nagato revived Kakashi remains unknown, and Naruto himself isn't weak in combat strength.
Calculating the time, Naruto Uzumaki should have mastered Sage Mode by now, which significantly boosts his combat strength. Moreover, he has the Nine-tails as a safety measure; in the Blast Eight-tails State, even Nagato would find it hard to subdue him.
"Team up to block them?"
