Possible origins of Death Reaper Seal

[New knight48]

If Kishimoto reveals that hagoromo's brother inherited Kaguya's Byakugan was the direct progenitor of both the hyuuga and uzumaki maybe he was extremely good with seals like what the uzumakis are known for and was the one to create the death reaper seal trapping either himself or his demon mom Kaguya as the death reaper. It's also possible Hagoromo was the one that sealed his brother.

If you ask me Kaguya, Hagoromo, and the Death Reaper look related but of course Death Reaper looks like a male so this further shows that it might be Hagoromo's brother.

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[Huzaifa]

Well it is probably his mother ( sir derp obito has a lot of threads about these things look at his for my reasoning)

 

[IcedFox]

The Shinigami you see though is actually female.

 

[Lord Naruto San]

His mother was known as the Rabbit God maybe they looked at her as the Death God

 

[HamzaVeli]

i mean the sage did have a brother though ??

 

[HyuugaHeir]

Yessss.His brother might be the one who's adept to fuinjutsu and has Byakugan.
Eight Trigrams

 

[HyuugaHeir]

Yessss.His brother might be the one who's adept to fuinjutsu and has Byakugan.
Eight Trigrams