Nabari no Ou (Volume 1) by Yuhki Kamatani

Miharu Rokujou is an average high school student who is indifferent to all and everything around him. His life is turned upside down when ninjas start coming out of Nabari, or the shadow world to take something from him. Unbeknownst to Miharu, he has the hijutsu (secret art) inside of him and all of the [...]