I don´t get what you´re saying.His father and Asuma are brothers and Hizuren is his grandfather.Hmm his father would need to be Hiruzens brother so....I dont know as in the Danzou flashback etc we never saw Hiruzen with a brother.
Sasuke Sarutobi was Hiruzens father so either Sasuke Sarutobi had a brother/sister who had a child or Hiruzen had a brother...hmm
Yeah sorry Asuma's brother.I don´t get what you´re saying.His father and Asuma are brothers and Hizuren is his grandfather.
I´m sorry if you meant something else but I just got confused.