Konkon owns the mask of Kyuubi No Kitsune, the mystical 9-tailed fox, which formerly belonged to her mother - Nagareboshi. Her mother was killed by Ansatsuken, a very powerful Class 5 ONI. Konkon has sworn to find Ansatsuken and avenge her mother

and for that she will have to learn to use all the powers of the Kyuubi mask.

In addition to the mask, Konkon also inherited from her mother the knowledge of Kyudo - the martial art of archery - and the power to shapeshift. Her ancestors are directly linked to Kyuubi No Kitsune and therefore she has some powers. But many others even more valuable powers are stored in the mask. This mask was created to honor the 9-tailed fox and hold all the powers of all previous generations of her family.

With each generation, the mask grows more powerful. It's up to Konkon to unravel and learn to use all the powers to defeat Ansatsuken.