3.564 out of 5 from 257 votes
There's an adage that one man's trash is another man's treasure; but for Kosuke Ueki, one man's trash is another man's... tree?! Junior high school teacher Mr. K is in the running for the title of Celestial King. Candidates must select a junior high school student to endow powers upon, and then the students might fight each other mercilessly. The victorious student's benefactor will become the new Celestial King! Kosuke was Mr. K's choice, and for his power, he chose the ability to turn trash into trees. Furthermore, if he uses his abilities to harm others, he will lose one of his natural talents. Now, Kosuke must battle a variety of other power users to help Mr. K win it all, all while keeping his talents intact!
Every five hundred years, the Shaman Fight takes place to choose the Shaman King - the strongest of the shamans. Now, the time has come once more for the Shaman Fight, and shamans from around the world have gathered in modern-day Tokyo to compete. One such competitor, Yoh Asakura, is determined to become the Shaman King. Together with his friends and his partner spirit, Amidamaru, Yoh sets forth on a journey to decide who is the strongest and most worthy to become the Shaman King.
Both of these shounen manga involve people of all ages who fight against one another using power beings as weapons. The art style is also the same because it's done by the same person. Fans of one would love the other for sure.