Board Thread:Fourth Databook/@comment-3279282-20141105164529/@comment-25604897-20141108130123

Kitsuchi is either is Onoki's son or son-in-law. . . because we know that Kurotsuchi is Kitsuchi's daughter and Onoki's grand-daughter.

Norleon wrote: So then technically, Onoki and these three guys are siblings??? xDDDDDDD

Those characters are Non-Canon.