Detergent, as well as an Anime about a teenager named Kurosaki Ichigo. You can read the people that will soon be below me's description. :p To add on to this, I would like to say that he obtained his Shinigami (Death God) powers naturally (that is, after he lost them). It is found out in the Anime (not manga) that his father is a Shinigami, so Ichigo is a true Shinigami, not a representative. Since the fillers are over, the main story is back.

Ichigo will now try to defeat hollows and discover his hidden power, him being a "Vaizard", one that is half hollow, half Shinigami. Ichigo calls it an "organization", but it's really what he is. As he tried obtaining his lost powers borrowed from his friend Rukia, he nearly became a hollow. Thus, he's a vaizard. Vaizard's are very powerful.