The Order of the Five Trees is an order of monks whose mission was to safeguard the forest's oldest trees, which also served as the focus for the Kodama.
During the Kami war, the order was largely wiped out as each of the Kodama awakened.
The monks of the North Tree rarely saw their kodama until the Kami War, when it woke like a slumbering, angry bear. -Poem of the Five Trees
The monks of the South Tree had always reveled beneath their kodama's friendly gaze. During the Kami War, this gaze became fierce and full of hate. -Poem of the Five Trees