In January, it was announced that King Gnu would be performing "Chameleon" as the theme song for the live-action adaptation of the manga series Don't Call It Mystery, starring Masaki Suda.

[1] King Gnu performed "Chameleon" on Music Station on March 4, 2022.

[4] King Gnu also performed the song on a three-hour special of Count Down TV on April 18.

Daiki Tsuneda, the songwriter, said that he wrote the song "thinking that there is love in continuing to face the complex creatures that humans are".

[3] A music video directed by Perimetron's Osiron was released on March 14, 2022.