One very good introduction to Indonesian Mythology is

Graham Masterton's extremely well-crafted 1987"Death Trance",
set on Bali Island.

We tend to forget that Indonesia has its own tradition of magic lore
that predates Hinduism and Islam.

This series is a welcome addition to high-brow "Horror-International".

For, if there is a common denominator to mankind from the earliest
ages to today, it's the reality of magic practices.