From the introduction:
This is a non-canon addendum to Legends & Lore, featuring new deities taken from Philippine folklore.
Situated in the South China Sea between China, Indochina and the islands of Indonesia, the cluster of islands known as the Philippines have always been a virtual crossroads of cultures. The islands were once inhabited by nation-states, much like the American Indians of North America, and each of these nation-states had their own mythology, their own culture, and their own belief systems. Unlike Greece, Rome, Egypt or Norway, however, the Philippines never really attained a unified culture and thus never gained a unified mythology.