Kick Back (song)

This song is used as one of the opening theme for the anime series Chainsaw Man.^[3] Yonezu was in charge of the theme song for the TV anime My Hero Academia, the first opening of the second season. It has been about five years since the theme "Peace Sign".

King Gnu and Millennium Parade member Daiki Tsuneta participated in the production and arrangement with Yonezu.^[4] "Kick Back" also samples Morning Musume's 2002 song "Sōda! We're Alive".

On September 19, 2022, the preview for Chainsaw Man was released, with "Kick Back" being used. In addition, it was also performed live for the first time at the Tokyo Metropolitan Gymnasium performance on the first day of "2022 Tour / Henshin", which was held on September 23. In addition, the arranger Daiki Tsuneta appeared at the tour final at Saitama Super Arena on October 27.^[5]

The CD single was released in three formats: a chainsaw board, a video board, and a regular board, and it also came with a "Kenshi Yonezu 2023 Tour / Fantasy" advance lottery application serial number and a corporate privilege sticker.^[6][7]

In the United States, the single was released by Milan Records.^[8]

"Kick Back" became the first song with Japanese lyrics to be certified both gold and platinum by the Recording Industry Association of America (RIAA). The song achieved gold certification in 2023 and platinum certification in 2025.^[8][9][10]

Prior to the song's release, the music video premiered on October 25, featuring Yonezu and Daiki Tsuneta. It was directed by Yoshiyuki Okuyama [ja], who also worked on the music video for "Kanden" and Yonezu's promotional photos. In the video, Yonezu devotes himself to training in a gym alongside Tsuneta. After a montage of vigorous working out and Yonezu shown with large muscular arms, Yonezu runs off a treadmill into a field and then onto a road, where he is hit by a truck, which launches him through the air and into doing parkour across shipping containers and city buildings. A group of men dressed in similar attire appear and run alongside him through an industrial site and across a quarry. The video ends with Yonezu shown back in the gym, walking on a treadmill alongside Tsuneta, with a security camera revealing Tsuneta is not really there.^[11]

The opening sequence for the Chainsaw Man anime plays tribute to several films, including Reservoir Dogs, The Texas Chain Saw Massacre, Pulp Fiction, Sadako vs. Kayako, No Country for Old Men, Fight Club, Messiah of Evil, Once Upon a Time in Hollywood, Don't Look Up, Jacob's Ladder, Constantine, and The Big Lebowski. The other references are the manga Goodbye, Eri and Fire Punch by the same author, the song "Sōda! We're Alive" by Morning Musume and the anime Neon Genesis Evangelion. The sequence was directed and storyboarded by Shingo Yamashita.^[12]

Credits adapted from the liner notes^[13]

• Kenshi Yonezu - vocals, songwriter
• Daiki Tsuneta - guitar, bass
• Shun Ishiwaka - drums
• Jun Miyakawa - organ
• Shuntaro Tsuneta - violin
• Sonoko Muraoka - cello
• Haruka / Haruka to Miyuki - chorus
• Chainsaw: 放生多加男, 石川猛
• Yuichi Kitamura - Drum Technician
• Ryuma Annaka - recording engineer
• Masahito Komori - recording engineer, mixing engineer
• Randy Merrill - mastering engineer

To commemorate the streaming release of Chainsaw Man: Compilation, which brings together all 12 episodes of the TV anime, a remix version of "Kick Back" by Frost Children with a visualizer was released on September 5, 2025.^[51]