"Mirai no Kakera" (未来の破片, Piece of the Future) is a song by Japanese rock band Asian Kung-Fu Generation. It was released as the first single of their major-label debut album, Kimi Tsunagi Five M, on August 6, 2003.^[1] In 2020, this song was used for promotional anime video for horse race event, 65th Arima Kinen, with original characters then became anime Fanfare of Adolescence.^[2] The song's b-side, "Entrance," was later included on the band's 2006 compilation, Feedback File.

The music video for "Mirai no Kakera" was directed by Suguru Takeuchi.^[3] The PV features the band performing the song in a pitch-black environment. As they play, a mysterious woman wearing a hideously cartoonish, cardboard mask resembling Gotoh's face dances to the song.

• Masafumi Gotoh – lead vocals, rhythm guitar
• Kensuke Kita – lead guitar, background vocals
• Takahiro Yamada – bass, background vocals
• Kiyoshi Ijichi – drums
• Asian Kung-Fu Generation – producer
• Yusuke Nakamura – single cover art