Kai: and the Grim Forest

Two kids named Kai and Tsuya are outcasts of society living in a world of super powers and good and evil on Tokatar Island, along with all the other citizens of the island. When suddenly their attacked and forced out of their home and find a camp site with a team of ninja's and they join them and help with their missions. Kai is still mourning about his brother Tai's death... or is he dead? Read to find out!