Sukuna is the King of Curses in Jujutsu Kaisen, the manga and anime series that turned him into one of anime's most quoted villains. This particular clip appears to be a fan-made or dubbed edit pairing his persona with a Portuguese phrase, the kind of regional meme audio that circulates on soundboards and short-form video apps. Brazilian and Portuguese-speaking meme pages frequently remix anime voices with local slang, and like other famous villain one-liners, short villain lines like this one travel well because the arrogance translates even for viewers who don't catch every word.