Board Thread:Episode Discussions/@comment-25787298-20160519120227/@comment-25549954-20160520173946

"Otsutsuki" in Asura Otsutsuki is clan name, a surname, Hagoromo X someone's offspring will have their surname Otsutsuki because Hagoromo and Otsutsuki clan have high status, it doesn't mean they have direct relation to Otsutsuki of another planet or they should have Byakugan bloodline. After Kaguya's sealing, Otsutsuki clan branched off into two, Hamura's progeny all gained Byakugan and some of Hagoromo's descendants gained sharingan.