When it was announced Boruto would have a time-skip, fans were curious how the young shinobi would fare under Sasuke. Naruto's son had to flee Konoha after Eida's reality rewrite, which allowed Kawaki to take control of the Hidden Leaf. Sasuke promised Sarada he'd protect and level up Boruto, reaffirming they'd reset existence along the way.
Source：https://www.cbr.com/boruto-sasuke-isnt-the-right-mentor/
