Blue Bird was originally the third opening theme for Naruto Shippuden, performed by Japanese band Ikimono-gakari and released in 2008. Its bright melody and lyrics about chasing freedom matched the series at a hopeful turning point, helping it become one of the show's most remembered openings. As anime clips spread across YouTube, TikTok and meme pages, the short chorus became a shorthand for optimism and determination. It is still used today because it instantly evokes nostalgia for longtime fans while working cleanly as an uplifting soundtrack for new edits.