Kiyu was born as a simple child of the Kushik tribe. Neither was she anything special, nor did she anything special.

The only thing special was the time in which she was born and grew up. Humanity was in an age of calm, which followed each age of chaos in the Spirit War.

For Kiyu, there was neither war nor suffering, and even death was foreign to her. But after each age of calm, chaos follows again, and each time it sweeps over the realms of humans like a wave.

As one of the few people who had to witness the beginning of an age of chaos firsthand, she and her best friend Rika get caught up in the conflict of spirits and humans.

Will she be able to adapt to the circumstances of war, or become just another victim?