[Spoilers] possible answer

[jorgelius]

it might be just possible juubi is half of sage of six paths, the bad side by sealing juubi sage become complete..

just what are the odds they have same eyes

[The Savior]

Ehh idk about that need more evidence then that.

[zinescience]

are u saying so6p sealed part of himself in the juubi like minato seal part himself in naruto cos he fear the juubi return.

[jorgelius]

well for starters sage has said to be forefather of all ninja, his lineage is said to be uchiha + senju, that is also madara's lineage he awakened rinnegan but something feels madara don't know whole story, kabuto who obtained genes of multiple clans got insane power up,

sage and juubi are god-like figures

kishi got lot of inspiration out of dbz, there that would be basic stuff

[jorgelius]

are u saying so6p sealed part of himself in the juubi like minato seal part himself in naruto cos he fear the juubi return.

no, this is just theory but basically i meant heavens create priest with insane powers, and equally powerful monster who basicly is sage's hate or something like that