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i say this, cause in case of naruto,,, i have to say that tobi was meant to be obito... considering that right eye having a hole to signify he has one eye or one using eye....... and the way his name is reversed and all.... i mean i find it really surprising when it turned out to be madara..... maybe it was planned, but i was hoping tobi to be obito,,,, but pretty much everyone was guessing he really was obito,,,, or maybe its madara possessing obito's body.......... and bleach as well,, i was surprised to see ichigo's father being a shinigami,, which the only excuse he had was "i never called kon in ichigo's body by his name while he was there"...
but maybe im making far fetched