nyawdao2
If it's true what was said in the preview the author made of the story Hiruzen should be 58 when the Nine-tails (Kurama) gets unleashed, and in the beginning of the story it's year 36 so Hiruzen has only been Hokage for 19 years and Hiruzen is also 36 right now. p.s: Hiruzen Sarutobi became the Hokage at the age of 22.