Obito is the sixth hokage

[Meowazziel]

He is as a spirit inside Kakashi. Kakashi and his body, are the host.
Just as Ashura is in Naruto and Indra in Sasuke.

So Obito will still become hokage in a way if Kakashi becomes hokage .
Lol he will manage to become hokage after all, making Naruto wait in line.
Dat Obito .

 

[Gokuy]

And I thought Konohamaru was gonna become'7th.....

 

[Dantе]

It's temporary bro... Obito has to leave Kakashi's body to fulfill his pedo dreams with Rin.

 

[Hiraishin Stage 3]

obito will return to rin soon

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[giostep]

His chakra will go away very soon. He is just there to save them for the time being.