The group Brilliant4 is made up of the seiyuu from the TV anime Amagi Brilliant Park (甘城ブリリアントパーク) . The seiyuu are Aisaka Yuuka (相坂優歌) , Kurosawa Tomoyo, Mikami Shiori (三上枝織) , and Tsuda Minami (津田美波) .

Brilliant4 sings the ending song to the TV anime. The lyrics booklet for Elementario de Aimashou ! has many nice color photos of the seiyuu.