An original song created as the theme song for FM NACK5's music event "CARRO presents NACK KEYAKI ON-DO ~ON the music, DO the dance~," held over three days from July 31 to August 2 at Keyaki Hiroba, adjacent to GMO Arena Saitama in Saitama Shintoshin. THE SAITAMAX is a unit formed by five acts of artists from Saitama Prefecture, centered on Kaname Nemoto of STARDUST REVUE and singer-songwriter Toshihide Baba, along with bassist Takamune Negishi, Hisashi Kato of THE COLLECTORS, and Tsuru (Atsushi Akino, Yuichiro Kanda, and Yoshiki "Don" Kasai), who came together to create "Hashire! Saitama no Koi".