Board Thread:Episode Discussions/@comment-1181222-20170405101958/@comment-734582-20170406061103

TheKidXD wrote: And no one before him had this Dojustu. Technically we don't know. It could be the Hyuga's dirty secret, but it could also be a dojutsu used by the Moon Otsutsuki that is now making it's way here due to Hinata's brush with Hamura.

We've seen four clans as the primary descendants of Kaguya, and they maintained their dojutsu pretty well. Senju and Uchiha didn't mix due to rivalry (though later on they did, and Mangekyou became more common. Colleration? Causation? Coincidence?). Uchiha and Hyuga both have Dojutsu and wouldn't mix to preserve both kinds of special eyes. moon Otsutsuki didn't mix due to geographical reasons. There may be combined dojutsu out there (though i personally find it unlikely) never uncovered due to the clan system.