Niji no Conquistador (虹のコンキスタドール, Niji no Konkisutadōru, “Rainbow Conquistador”) is a Japanese idolgirl group formed in 2014.^[2] The group is themed around illustrating, cosplay, and voice acting.^[3] The group was originally managed by the illustration website Pixiv as a part of the Tsukudol! Project (つくドル！プロジェクト, Tsukudoru! Purojekuto) before passing to Dear Stage.^[4]

https://en.wikipedia.org/wiki/Niji_no_Conquistador