Juni Taisen: Zodiac War
The One Wish That Must Be Granted, and the Ninety-Nine That Can Be Done Without
S1 E12:
Nezumi, Warrior of the Rat, is an ordinary high school student in his normal life. He used his ability, Hundred Paths of Nezumi-san, to become the Taisen's lone survivor, and in the process learned the wishes of the battle's other participants.