Closer was performed by Japanese-American singer Joe Inoue and released as a single in 2008, becoming the fourth opening theme for Naruto Shippuden. Its upbeat rock sound matched the series' shift into more intense story arcs, and the opening quickly became one of the most recognisable from that era. Fans have kept it alive through AMVs, TikTok edits and anime compilations, where a few seconds are enough to trigger recognition. It remains popular because it captures the optimistic, determined tone associated with Naruto's journey.