just what akai. said sarutobi is a surname. it is used so much in ninja animes because a legendary ninja was named Sarutobi Sasuke. but as far as we know asuma is not related to konohamaru and 3rd. altho we have no proof that sarutobi is 3rds surname BUT we have no proof that it is his firstname either.


kakashisensei speak for yourself about gai. i for one knows his surname. if you guys wanna know then ill tell ya. gai's surname is maito. his name is Maito Gai.