When Boruto: Two Blue Vortex began, fans knew there'd be big changes to Konoha. Kawaki was in power after he had Eida rewrite reality. This gave him the Hidden Leaf's military to pursue Boruto and Sasuke, so he could kill Naruto's son and ensure Momoshiki wouldn't be reborn.
Source：https://www.cbr.com/boruto-two-blue-vortex-naruto-era-change-teaser/
