Caster identity is Princess Kandita, one of the
of goddess Nyai Roro Kidul. Kandita is a princess from Pajajaran, the sole daughter of King Siliwangi VI that lived at ± 1500AD, she is gifted with natural beauty and loved by her father. However, the king's concubines are jealous of her, they hire a witch to curse her and the queen- but only the queen is killed from it.
Sometime after moved on from the death of his wife, he married another woman- Dewi Mutiara. The new queen decided to eliminate Kandita, as she views her as a competitor for her son future throne. The queen tried many times to banish her, but the king stops her for doing so and declared no one can harm his beloved daughter. So the queen decided to back down, for quite sometimes...
The queen is not an incompetent schemer, if she can't banish Kandita by outside force, then she only needs to encourage the king to banish her by himself.
So the very same witch cast a very potent spell, cursed her with a skin disease that disfigures her appearance and unable to be healed. The king reluctantly banishes Kandita from the kingdom, unable to bear the sight that her daughter being ridiculed by the masses.
She wanders without a destination, in hope to finding a cure, but no avail. In her peak of despair, she found herself in a spiritual beach, the Pantai Laut Selatan. The ocean spoke to her, whispering gently:
"Poor child. Forget everything that's painful. Let's enjoy life like how it supposed to be. We will share your pain, and you will share our rage. You become us, we become you. Jump to the sea and you will found salvation."
So, she fused with the ocean, regained her former beauty, becoming the goddess Nyai Roro Kidul, like many other princesses suffering with similar fate.
Nyai Roro Kidul is an Indonesian goddess of the sea and beauty and recently become the goddess of the demon and disaster. She rules her own domain, the Pantai Selatan, akin to how Zeus rule Olympus. She is the opposite of the Earth Mother Goddess, who become the basis for various earth goddesses. Despite already existed before, Nyai Roro Kidul is composed of various young individual, from peasant girl to princess, from mortal to goddess, all of them become a single powerful entity.
Kandita represents the goddess's soul and desire, also her hatred toward injustice and older women; the attribute that embodied by Queen Mutiara. There is at least 9 main avatars that represent the goddess's body and personality.
In the present time, due to religions and modern influence, she is now remembered as a demon. Thought some of the locals still give her offering once in a year, but that's because of the fear of her anger, not worship. If she being summoned now, she will be summoned as a Beast for sure.