12 years ago, in the country of Rimguard, a big incident left an unsolved mystery that has begun to fade from people's memories. Time passes, and sisters Yui and Rena are living peacefully in the Enastria Empire. However, one day, a large mecha attacks Enastria. This day marks the turning point when the two girls get caught in the vortex of fate.

• Kaede Hondo
• Ayane Sakura
• Yurika Kubo
• Yui Ogura
• Asami Seto
• Nao Toyama
• Hisako Kanemoto
• Megumi Ogata