One of the more admittedly frustrating elements of Boruto: Naruto Next Generations' string of anime original arcs was that because the anime had yet to adapt some more story elements of the manga, the mystery of Boruto's Karma mark has been left unexplored. Defeating Momoshiki Otsutsuki left him with the mark, and it was like Boruto just stopped being concerned about it at all for well over 70 episodes now. This meant that it's power and potential ties to Momoshiki are still left hanging in the air. But that might be changing soon if the latest ending theme is anything to go by.