Tengen Toppa Gurren Lagann is a 2007 mecha anime produced by Gainax and directed by Hiroyuki Imaishi, famous for its hot-blooded story about humanity fighting impossible odds with sheer willpower. Clips of its most intense shouted moments began circulating in anime edits and AMVs in the early 2010s, then spread wider as motivational meme audio on TikTok and YouTube. Its enduring appeal comes from sincerity: in an era of ironic memes, its unironic battle cry still gives creators a shorthand for absolute determination.