Mori no Senshi Bonolon

Bonolon is touted as the warrior who comes from the forest of the great oaks. Despite his huge body size and outwardly orange appearance, Bonolon is only a child of 9 years old.
However, notwithstanding his tender age, Bonolon possess a strong sense of justice and strives to become a reliable man. The tears of those people who are depressed or troubled will flow through the roots of the great oaks and communicates their feelings to Bonolon. Bonolon will then appear from the great oaks and help the people solve their problems as well as grant their wishes.

(Source: Anime News Network)