These are just my vague predictions for my own pruposes on what will happen,how Kaguya is beaten and the future of the Narutoverse.
Stated here the Sage of 6 Paths stated that his mother Kaguya Ōtsutsuki was the strongest there ever was.
It should be then clear that any form of Hagoromo was weaker then Kaguya at her prime which includes him being a The Shinju Jinchūriki
Can Naruto and Sasuke beat someone this strong at there current level? The answer is No and the reasons are obvious so what is are the only methods available to them to win.
Power ups or Rikodu/Rikodu's brother/Both helping them
Lets explore both options and the likelihood of each method
Intervention
Rikodu seems only able to speak to Naruto through the tailed beast chakra, it seems very unlikely as he stated hes dead and hes just floating chakra.
There are other ways such as Rinnei tensei although its doubtful whether Madara would help Naruto even against Kaguya.
Since Hagoromo died a long time ago im going to rule out Edo tensei on either himself or his brother
Now that we have ruled out for the most part anyone coming to save Naruto we are left with powerups its my believe that Naruto and Sasuke will eat the fruit.
Powerups
Here its stated a princess born in a world where people had no power to use niinshu and subsequently ninjutsu obtained power beyond anyone that has ever lived or probably ever will
Her power is so great that even now her descendants are granted abilities just because of their blood ties with her so needless to say Naruto and Sasuke eating the fruit will make them stronger.
Only together can they beat the Rabbit goddess with teamwork redeeming the sages mistakes
Stated here the Sage of 6 Paths stated that his mother Kaguya Ōtsutsuki was the strongest there ever was.
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It should be then clear that any form of Hagoromo was weaker then Kaguya at her prime which includes him being a The Shinju Jinchūriki
You must be registered for see images
Can Naruto and Sasuke beat someone this strong at there current level? The answer is No and the reasons are obvious so what is are the only methods available to them to win.
Power ups or Rikodu/Rikodu's brother/Both helping them
Lets explore both options and the likelihood of each method
Intervention
Rikodu seems only able to speak to Naruto through the tailed beast chakra, it seems very unlikely as he stated hes dead and hes just floating chakra.
You must be registered for see images
There are other ways such as Rinnei tensei although its doubtful whether Madara would help Naruto even against Kaguya.
You must be registered for see images
Since Hagoromo died a long time ago im going to rule out Edo tensei on either himself or his brother
You must be registered for see images
Now that we have ruled out for the most part anyone coming to save Naruto we are left with powerups its my believe that Naruto and Sasuke will eat the fruit.
Powerups
Here its stated a princess born in a world where people had no power to use niinshu and subsequently ninjutsu obtained power beyond anyone that has ever lived or probably ever will
You must be registered for see images
Her power is so great that even now her descendants are granted abilities just because of their blood ties with her so needless to say Naruto and Sasuke eating the fruit will make them stronger.
You must be registered for see images
Only together can they beat the Rabbit goddess with teamwork redeeming the sages mistakes
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and creating a peaceful world where together they teach niinshuu for peace breaking the cycle once and for all!