Wasuta (わーすた; The World Standard), is a Japanese idol girl group with a magical cat-girl theme. Their main style is bubblegum pop and pop-rock, with many of their songs having electronic elements as well. The group is made up of five members, each with assigned pastel colors: Ruka Mishina (pink), Nanase Hirokawa (green), Miri Matsuda (purple), Ririka Kodama (blue), and Hazuki Sakamoto (yellow).