For as long as anyone knows, beings called "Puppets" have been an invisible part of our world. They operate in service of a force unknown, quietly manipulating the course of history. Hajiro Mina is an ordinary high-school girl and the protagonist of this story. One day, she has a chance encounter with one of these Puppets, setting her on a trajectory to meet three girls—and ultimately changing her life forever. Source: The Game Website.