Nabari no Ou

Nabari no Ou~ 26-episode anime

The story revolves around Miharu Rokujō, a seemingly ordinary middle school boy whose body possesses an "Omnipotent" (Shinra Banshō) power from a hidden ninja world. Miharu discovers that he is being protected by two Banten ninja — who happen to be his English teacher Kumohira Tobari Durandal and his classmate Kōichi Aizawa. A 14-year-old female samurai named Raimei Shimizu is also watching his back. Meanwhile, the Iga Gray Wolf Pack is hunting Miharu down for his power. (Look it up for better description >.<)

Don't know if it's good or not...but watching it now...You can watch it on: http://www.animeseason.com