The line comes from Sorairo Days, the opening theme of the 2007 anime Tengen Toppa Gurren Lagann, performed by Shoko Nakagawa. The song plays over the show's opening sequence, setting up its story of underground villagers fighting their way to the surface and beyond. Clips of the chant later spread through anime edits and AMVs on YouTube, then through short-form video, where creators used it to signal determination and a turning point. Its simple rhythm and defiant message keep it useful for hype edits long after the series ended.