Kōsuke Ueki is a fictional character from the manga and anime series Ueki's Law, created by Tsubasa Fukuchi. He is a young boy with the unique ability to turn trash into trees, which he uses in battles against other contestants in a competition to become the next God. Ueki is known for his strong sense of justice and determination to protect his friends. In the series, Ueki is often accompanied by his friends, including Rokusuke Ueki and Kobayashi. The story revolves around their adventures and challenges as they navigate the rules of the competition, showcasing themes of friendship, perseverance, and the importance of using one's abilities for good.