Board Thread:Boruto: Naruto the Movie/@comment-2120712-20150730042954/@comment-25319479-20150730091721

If the spoiler about Mitsuki's father is true, that means Konohamaru is training the son of the person who killed his grandfather. That's kinda messed up but then again, Naruto is friends with Kurama who sorta killed his parents.

And Sakura being the only student of the 5th is correct, seeing as Tsunade wasn't Hokage when she trained Shizune.