This is where the similarities with Minato's Flying Raijin are, as Minato used marked Kunai to teleport. However, Boruto found a problem with using similar-looking metal objects to teleport and ...
Boruto: Two Blue Vortex chapter 16 explained the trick behind Boruto’s Flying Raijin Jutsu. *Sumire becomes jealous about Sarada hugging Boruto as Kashin plans a strategy with Shikamaru.