idk about good in arena. Most of the time I see him in arena against me, all he does is break iruka shields (should I be using iruka). That and with KCM Naruto it avoids quite a bit of damage (from chases). However when I use him in arena I get rather good results, so I guess it is dependant on what you face.
The team that I use struggles only against 5k madara+ mirror (i need to time my interruption to stop 5k, which is pure guess most of the time).
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