Yuu☆Yuu☆Hakusho

One fateful day, Yuusuke Urameshi, a 14-year-old delinquent with a dim future, gets a miraculous chance to turn it all around when he throws himself in front of a moving car to save a young boy. His ultimate sacrifice is so out of character that the authorities of the spirit realm are not yet prepared to let him pass on. Koenma, heir to the throne of the spirit realm, offers Yuusuke an opportunity to regain his life through completion of a series of tasks. With the guidance of the death god Botan, he is to thwart evil presences on Earth as a Spirit Detective. To help him on his venture, Yuusuke enlists ex-rival Kazuma Kuwabara, and two demons, Hiei and Kurama, who have criminal pasts. Together, they train and battle against enemies who would threaten humanity's very existence. One day, 14 year old Yusuke Urameshi suddenly finds himself dead, having died pushing a child out of the way of oncoming traffic. Since he has such a bad personality, even the Spirit World was caught by surpise that he would sacrifice himself. Yusuke soon finds out he wasn’t supposed to die and has a chance for resurrection and bringing his body back to life. After being resurrected, Yusuke becomes a Spirit Detective, along with his comrades, and one adventure after another happens, whether it be an investigation or a fighting tournament.