The Hidden City- Unfullfilled Soul BxB

Arden was just a normal High School boy, he was always bullied but he did not complain. WHen one day he was again targeted by his bullies, he could not contain his rage that time and he released a powerful energy that knocked them all out. The next day he was visited by very mysterious persons who wanted him come with them. Then he was brought to the City of Xylenia, a city that is Hidden on top of a huge mountain.....