This^It's not a rip off at all, Kamui comes from Kaguya's S/t which Sasuke unlocked from having a more advanced Rinnegan closer to Kaguya's RinneSharingan
And Naruto used chakra arms to retrieve Hinata's chakra, he's able to do it because he possesses Six Six Path Senjutsu just like Hamura. What he did was no different to what Obito did to Madara when retrieving the chakra of 8tails and 1tail
Kamui have dimension portal and intangibility
kishi gave dimension portal to sasuke
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and gave naruto intangibility
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It's not a rip off at all, Kamui comes from Kaguya's S/t which Sasuke unlocked from having a more advanced Rinnegan closer to Kaguya's RinneSharingan
And Naruto used chakra arms to retrieve Hinata's chakra, he's able to do it because he possesses Six Six Path Senjutsu just like Hamura. What he did was no different to what Obito did to Madara when retrieving the chakra of 8tails and 1tail
That happens when author run out of ideas before OPing his favorite characters to the fullest, Ctrl+C/Ctrl+V others' abilities into main characters...
As for naruto it seems he turned his arm to pure chakra to retrieve the orb