Boruto: Naruto Next Generations threw a twist into the series early on, after Boruto destroyed Momoshiki Otsutsuki. The villain’s “death” left Boruto marked with the mysterious Karma seal, which began to reveal unusual abilities of its own. Momoshiki left Boruto with a dark proclamation along with his mark, warning him that his special blue eye (the Jogan) would cost him everything. (Manga Spoilers) That prophecy has started to come true in Boruto’s latest manga arc, as the battle with a new Otsutuki threat (Isshiki) has confirmed that Momoshiki is slowly but surely taking over Boruto’s body. In that sense, Momoshiki has basically become Boruto’s Nine-Tails.