They were tentatively given the name THE THIRD(仮) before getting their official name. The group was initially formed as a backup band for the vocalists of Afterglow, Pastel*Palettes, and Hello, Happy World! due to them being unable to play their characters' instruments. It was then revealed during the second live that THE THIRD has officially become part of the franchise, along with a new name, RAISE A SUILEN, and a newly recruited member, Risa Tsumugi.
