Board Thread:Boruto Discussions/@comment-25319479-20160502145551/@comment-24824859-20160504221215

@QuakingStar and @Ravenlot 27 The Byakugan being activated doesn't manifest markings around the eyes. What Boruto used is Sage Transformation, as shown around the black marking around his eye. As seen with Jugo and users of the Curse Mark, the user can manifest Sage Transformation on parts of their body. So Boruto used Sage Transformation and manifested it on the right side of his body