Mieuxmarie was the princess of Rimuhakku Kingdom and Yogi´s little sister hinted to be the most precious and closest person to him. After their village was slaughtered and their parents also killed, the ten year old Yogi was taken and imprisoned to be an experiment by Kafka scientists and Myuumarii was killed right before Yogi´s eyes, leaving him deeply traumatized, making him the sole survivor of the tragedy.
