It was released independently through her label the Lunar Landing Plan on September 29, 2023.

In January 2024, the song topped the Oricon Combined Singles Chart and Billboard Japan Hot 100.

[1][2] Tuki began posting her cover and original songs on TikTok while in middle school.

[3] "Bansanka" was inspired after her father mentioned "There are about 30,000 days in a lifetime".

[4] Tuki debuted the performance of "Bansanka" on Buzz Rhythm alongside "Inferno Love Letter" on April 20, 2024,[5] and performed on the 75th NHK Kōhaku Uta Gassen on December 31.