Ueki no Housoku

Kousuke Ueki, a student at Hinokuni Junior High School, is chosen by a God Candidate named Koba-sen to compete in a contest where participants battle for the chance to become God, with only the strongest emerging victorious. He is given the power to transform garbage into trees and joins other junior high students in the competition. The battles take place in an environmentally themed setting, with competitors using their abilities against one another.