Green FN grew out of gaming slang for a green, perfectly timed shot release in NBA 2K, where green signals a make, and the phrase spread widely on TikTok as shorthand for anything executed flawlessly. Editors soon paired it with confident characters, including Satoru Gojo from Gege Akutami's Jujutsu Kaisen, a manga launched in 2018 and adapted into anime in 2020. This second version leans into that pairing, keeping the joke portable for sports clips, gaming highlights and anime edits where a character looks untouchable, smug and completely in control of the moment.