Elements of Reality- To Become a Sage

Sages.
Super powered human beings capable of controlling one of the ten Elements that make up the world, extremely long-lived, they are capable of feats of tremendous strength along with the ability to shape the world around them, and they are the defenders of humanity.
Hiiro Kazuya is one such Sage, beginning his first year at Elem High, one of the four Academies which train young Sages for their future battles, and Hiiro is feels that he is going to become a great Sage... he just has one issue...
His Element isn't one of the known ten.