Ok Hear me out.
Hashirama was first Hokage = Obvious reason of him founding it.
Tobirama was second Hokage = Being Hash's brother and stronger then him.
Now to the point.
Hiruzen was the previous Hokage's pupils and sometime later, crowned Hokage.
Minato, was Jiraiya's pupil who was Hiruzen's pupil, and later crowned Hokage.
Tsunade was Hiruzen's pupil and later crowned Hokage.
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Kakashi should be Hokage IMO before Naruto. Naruto is still young and less experienced then Kakashi (This being Kakashi's second war). Kakashi was Minato's pupil and was almost crowned Hokage.
Naruto is Kakashi's pupil and will be later crowned Hokage (Sometime in the future).
Something like that
Hashirama was first Hokage = Obvious reason of him founding it.
Tobirama was second Hokage = Being Hash's brother and stronger then him.
Now to the point.
Hiruzen was the previous Hokage's pupils and sometime later, crowned Hokage.
Minato, was Jiraiya's pupil who was Hiruzen's pupil, and later crowned Hokage.
Tsunade was Hiruzen's pupil and later crowned Hokage.
=======
Kakashi should be Hokage IMO before Naruto. Naruto is still young and less experienced then Kakashi (This being Kakashi's second war). Kakashi was Minato's pupil and was almost crowned Hokage.
Naruto is Kakashi's pupil and will be later crowned Hokage (Sometime in the future).
Something like that