The lead track "SuperCali" is described to contain "a strong conviction that JO1 will continue to grow and burn with passion in every cell of their body". It was composed in the key of G-sharp minor and 144 beats per minute. The title is abbreviation for the English compound word "supercalifragilisticexpialidocious", popularized by the 1964 film Mary Poppins. The word was introduced as one that "makes infinite possibilities come true" before the song was performed for the first time at the last Fukuoka show of the 2022 JO1 1st Arena Live Tour "Kizuna" on September 22, 2022. "SuperCali" was made available for streaming on midnight the next day along with its performance video, which gained 10 millions views in just two weeks. It was debuted for public on NHK's Utacon on October 4, 2022.
