After Transmigrating Into a Book, the Saintess of Light Is Favored by the God of Darkness [Western Fantasy]

A brooding, cold, sensitive, dark god × a gentle, accepting light elf, a lofty flower

It is said that long ago, after the God of Light fought the darkness, he sealed the God of Darkness, Xierlifa, in the Ruins of Sorrow, where he would never see the sun again.

From then on, this land became a forbidden zone that made everyone tremble at the mention of it.

They say that no matter how pure or sacred the power of light may be, the moment it sets foot in the Ruins of Sorrow, Xierlifa's blood will taint it, corrupting it into wicked darkness.

As a servant of the light, anyone who falls into darkness loses the gods' protection forever and suffers under a curse for all eternity.

Three thousand years later, one of the most virtuous maidens in the Divine Court, the light elf Rafeiya, was exiled to the Ruins of Sorrow after accidentally freezing the holy water of the God of Light.

Before long, this once noble and pure maiden, a candidate to become the "Saintess of Light," went mad under the curse and died.

When Rafeiya woke up, she discovered that she had transmigrated into the Western fantasy novel she had read the night before.

The novel's supporting female character had a noble status, yet insisted on opposing the heroine, eventually making the terrible mistake of freezing the holy water and dying miserably under the curse.

Rafeiya, after transmigrating into the book: So I've got the cannon-fodder villainess's script.

She comforted herself: Don't be afraid. Being the Saintess of Light is just a job, isn't it?

If she lost this job, she could always find another one.

It's just that Rafeiya was incredibly lucky. She changed the course of the story and accidentally returned to the Divine Court, becoming the one and only "Saintess of Darkness" on the entire continent.

Many years later, a tale circulated across the continent of Lise:

After the former Saintess of Light, Rafeiya, entered the Ruins of Sorrow, she won the favor of the God of Darkness and took Xierlifa's power and wisdom.

Several years later, she returned to the Divine Court and successfully slew the false god Sulair, saving the imperiled continent of Lise.

And, along the way, she fell in love with the God of Darkness himself, Xierlifa.

* Slow-burn plot

* Many original worldbuilding details

* A villainous second female lead rises from the ashes

Theme: Transmigrating into a magical world and changing one's fate