"Twelve warriors enter a deathmatch, but only one can survive to win the ultimate prize.
Rampage. Weep. Kill. Every 12 years, the 12 signs of the Chinese zodiac take the form of warriors and engage in the ultimate battle royal. They face one another in battles to the death, using all the powers of their star signs, and the sole survivor is granted the ultimate prize—a wish. Any wish."
Juuni Taisen 「十二大戦」 is a light novel series by NISIOISIN and Hikaru Nakamura. It is a prequel to one-shot manga titled The One Wish That Must Be Granted, and the Ninety-nine That Can Be Done Without, and has spawned an anime and manga adaptations.
- Main Article: List of Light Novel Chapters