This is the season 6 thing, war has been waged and Endeavor had to call for backup...too many heros were down...so he called the only people that are stronger than heros...Jujutsu sorcerers and right as he was about to wave the white flag, the Jujutsu sorcerers showed up and saved him, for context,its VERY hard to see a Jujutsu sorcerer let alone see them in action