Board Thread:Episode Discussions/@comment-27924662-20170419222535/@comment-2112031-20170422145716

I think that what most people are suggesting, and that I agree with, is that Boruto's Kekkei Genkai is probably the result of a mutation due to him being the son of parents who originate from two seperate clans who may very well have never interbred before.

We only have two examples of this unusual circumstance, Boruto and Himawari. Himawari appears to have simply inherited her mother's Byakugan, although it looks slightly different due to Himawari having regular eyes rather than the pupil-les eyes that the Hyuga typically possess.

On the other hand, Boruto's eye doesn't really look like any of the others, and he only appears capable of using it in only one eye.

There's a character from the Itachi Shinden novel, Mukai Kohinata, who's a distant descendant of the Hyuga clan and, as a genetic throwback, was capable of activating the Byakugan, but only in his left eye.