Wouldn't Madara have died immediately? I mean Madara died of natural cause which was of old age, if Madara was revived without any modification wouldn't Madara just die directly upon revival?
I know Gaara died and was revived, but Gaara died because of a unnatural cause, while Madara died naturally of old age.
I know Gaara died and was revived, but Gaara died because of a unnatural cause, while Madara died naturally of old age.