Board Thread:Theories and Speculation/@comment-29242338-20160723085100/@comment-29364943-20160730062551

Other than the reason of Sasuke being the descendant of Indra's power, I think the older brother's prowess with Chakra usage is still evolving, making me believe that his Mangekyou Sharingan pattern is still evolving before he reached the swirl pattern shown in the summarized story between him and Asura. And also the filler chapter shows that they are still starting to use their newfound powers and conflict between their beliefs when Hagoromo gave their missions