The Legend of Tiger Fist: Enter the Tiger (Kindle Edition)

Young street tough Conner Mack must take on the mantle of an ancient hero despite his wishes. In doing so, he’ll inspire his city’s gangs of lost children as he attempts to defeat the supernatural forces that lurk there. These shadowy forces have been killing those who have chosen to oppose them for centuries and will do the same to Conner if he doesn’t rise to the occasion.

(check amazon)