Chapter 638 error?

[IKSOKRIPS]

NOPE. THERE'S NOT AN ERROR.
TAKE A LOOK AT THE FINAL HAND SEAL OF OBITO IN CHAPTER 637

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AND NOW TAKE A LOOK AT NAGATO'S FINAL HAND SEAL
HERE AND....

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HERE:

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I was going to say it, but this dude said it first. They finished their techniques with different Hand Seals. Meaning, there is no mistake. :yeah: