A rhythm game, developed as a collaboration between SEGA, Colorful Palette, and Crypton Future Media. Miku and her friends are famous fictional singers who exist in the real world as Virtual Singers. They perform songs created by producers from all over the world, and they also exist in “SEKAI,” a mysterious world separate from reality that is born from a person’s “true feelings.” The game focuses on original characters and their journeys to discover their true feelings with the help of the Virtual Singers.