Boruto Flashback Explains Why Ao Joined Kara A new flashback in Boruto: Naruto Next Generations' latest episode explained why Ao joined Kara's ranks! After making his impact in Boruto made it seem like he was simply a retired shinobi, it was quickly clarified that this was not the case. Because while Ao has let go of his former shinobi identity, he instead replaced that with a dedicated to the shadowy group Kara as their tool for violence. The newest episode of the series continues the fight between Ao and Boruto's Team 7, and they were able to come up with a counter plan to all of Ao's technological upgrades. When Boruto pressed him as to why he keeps referring to himself as a tool of Kara despite his lingering shinobi values, Ao reveals that Kara actually saved him following the Fourth Great Ninja War.