In a world where the Moon is a judge and the Sun is a hunger, Ji-ah is a "leftover daughter" marked for sacrifice. Hwi is the Moon's exiled son, a Sin-Eater cursed to consume the world's darkness until it claims him.

When their paths collide, they don't just break the laws of the heavens-they stain the very fabric of fate. From the icy palaces of the Lunar Court to the neon-drenched streets of modern-day Seoul, their love is an indelible ink that refuses to be erased by gods or time.

One is a vessel for the light; one is a shadow seeking home. Together, they are the Twilight.