The line comes from Fist of the North Star, the 1980s manga and anime series where martial artist Kenshiro says it after a lethal technique has already worked. The phrase spread far beyond the series through anime edits, fighting game clips and remixes that paired the calm warning with an instant defeat. It is often grouped with other long running anime meme lines like the To be Continued arrow from JoJo, because both turn a dramatic moment into a reusable punchline that viewers recognise instantly.