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Here you can see that he is missing half of his arms (at least that's what it looks like).
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Yet in the next page he has already grown them back (like a lizard).
It's just something interesting I saw. I guess it should be obvious that he would have this but still.
This might be his counter to Sasuke's S/T, since, so far, it looks like he can't react to it.
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Personally, I would like for this to be his counter, mainly because it would look humiliating every time though. However, it would also make use for his healing, otherwise it would be kind of useless.
Take that as you will.