Hikaru Mitsuko, a normal high school student, was suddenly attacked in an alleyway and unable to defend herself, called for help. A shrine priestess who, thousands of years ago banished the demon of Chaos into the mountains after a great and ferocious battle, came to her rescue. But her powers have since waned and she is no longer strong enough to stop the forces of Chaos as they wreak havoc across Japan once more. Dragged into the battle between Harmony and Chaos, can Hikaru still live a normal life as a teenaged girl while fighting to protect her friends and family?

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