D.Gray-man
With an eye cursed to see evil and blessed with an arm to slay demons, Exorcist Allen Walker is humanity’s greatest hope against the cruel Akuma. They lurk in every shadow, eager to do the bidding of their leader, the Millennium Earl.
Starring Toshiyuki Morikawa, Katsuyuki Konishi, Sanae Kobayashi, Kenichi Suzumura, Takeshi Aono, Junpei Takiguchi, Kenta Miyake, Megumi Toyoguchi, Takahiro Sakurai, Mitsuo Iwata
Watch "D.Gray-man" from streaming services Hulu Plus, Tubi TV, Amazon released in 2006. It's a animation and action & adventure show, and has a rating of 7.7 out of 10 from Imdb which is usually fine for this kind of show.