It's a world similar to ours, but where the darkness of the night is indeed riddled with monsters. Reika Ayakaze, an apprentice "hunter" who strikes down the monsters that threaten the people of the world, one day, she learns that an unfamiliar pattern is appearing on her best friend, Mana Tomita.

It's a world similar to ours, but where the darkness of the night is indeed riddled with monsters. Reika Ayakaze, an apprentice "hunter" who strikes down the monsters that threaten the people of the world, one day, she learns that an unfamiliar pattern is appearing on her best friend, Mana Tomita.