Board Thread:Manga Discussion/@comment-26834814-20150720102929

Thinking about the H insignia on Yotsuyu Yagiyama's attire/Stand and the fact that these Rock Humans seemed to have named themselves after mountains in their region made me think of an interesting theory.

It's noted that the Higashikata's (and Joestar's because of Johnny/Rina) all share a generational disease wherein they turn to stone and slowly lose their memories until they 'die'.

Is it possible that Rock Humans are members of the Higashikata family who after countless generations have reawoken because of the 'equivalent exchange' of the fruits, or simply on their own.. possessing no memory of their past lives?

or is it possible that the way Rock Humans reproduce is by gaining new members through those who are affected by the disease? 