However, Nagato's reincarnation was lent to him by Uchibo Madara before his death. This ninja has acquiesced that Nagato had reincarnation before he died, so he still has reincarnation after the filthy reincarnation. The characteristic of filth metempsychosis is to keep the appearance of the deceased and most of his abilities before his death. Moreover, the biggest feature of this ninja is that it can adjust the age of the summoned person within a certain period of time according to the needs of the performer, which is why the immortal fight can let Uchibo Shoko Asahara keep the eye he lent to Nagato before his death when he is reincarnated in filth, and then this rejuvenation has nothing to do with his strength before his death, which is also the reason why Uchibo Shoko Asahara can open the eye at the back to inherit the six powers.
This is also a major feature of reincarnation. It thinks that Nagato left a circle of eyes before he died. Foul reincarnation only considers what the summoned person has when he dies, regardless of whether these things will be taken away in the end. Therefore, even if Nagato is taken away by the dirt after his death, he can still use his eyes after the filthy reincarnation.
In this way, the cycle of polluted soil is a strong endurance. He can choose to summon the callee when he is strong or keep the callee's ability before he dies.