Sayonara, Mata Itsuka!

"Sayonara, Mata Itsuka!" (さよーならまたいつか!) is a song recorded by Japanese singer Kenshi Yonezu. Released on April 8, 2024, via Sony Music Records, it serves as the theme song for the asadora series The Tiger and Her Wings.

Background
On April 1, 2024, the song was announced as the theme song for the asadora series The Tiger and Her Wings and to be released on April 8.

Commercial performance
The song debuted at number 2 on the Billboard Japan Hot 100 for the week on April 20, 2024.

Music video
The music video was directed by Tomokazu Yamada. It features Kenshi Yonezu in a shoulder-padded power suit and is set at an A&W diner and unwinds in a whirlwind of events preceded by a reverse playback of the video.