currency book

In a world 3,000 years in the future where the world is 99.9% female. There are 3 males on Earth currently and it''''s been like this for 1000 years, a popular sport in this future is fighting and 30% of the population has supernatural abilities and only a small percentage of these people can fight in the pro leagues. One boy named Yukki is determined to become the strongest fighter he possibly can be but he has to attend a fighting academy to train his body and mind, something says he might have a lot of potential. Who will he meet along the way? Who will push his limits.