"Happy" is the third opening theme song to Kirarin Revolution and is performed by Koharu Kusumi from Morning Musume, who voices the main character, Kirari Tsukishima.

[3] The episode is a fictional account of how Kirari recorded the song with a "psychedelic" music director named Jake Shimamura, with Kusumi reprising her role from the show.

"Koi no Mahō wa Habibi no Bi", the fifth ending theme song to Kirarin Revolution, was included as a B-side and is also performed by Kusumi under her character's name.

[7][8] It features Kusumi dressed up as her character, Kirari Tsukishima, and dancing in a set resembling an outdoor yard with clouds.

[4] They also mentioned "Koi no Mahō wa Habibi no Bi" was more difficult than it appeared to sing because of its fast pace.