Universe: Jujutsu Kaisen

Originally from China, Vesper Xuan is an anomaly within the world of jujutsu.

She is the sole survivor of a now-extinct Taoist clan of sorcerer-alchemists known as the Xuan Clan, whose practices were deemed heretical for one reason: they sought to transmute cursed energy, not simply exorcise it.

During an emergency ritual remembered as The Night of Twilight, Vesper—still a child—was used as a living vessel to dissolve a special-grade curse. The ritual failed... and succeeded at the same time.

The clan was annihilated.

The curse vanished.

And Vesper survived.

Engraved within her body lies the Heart of Twilight, an incomplete central seal located at her sternum. This seal functions as an unstable filter, allowing her to temporarily alter the nature of cursed energy—at the cost of her body and soul slowly deteriorating. She does not store cursed energy: everything that passes through her must be transformed or released.

Today, Vesper is unaffiliated with any jujutsu school.

She operates alone, moving between China and Japan, intervening where conventional methods fail. The elders monitor her existence without daring to eliminate her. Curses recognize her as something profoundly unsettling.

She is neither heroine nor antagonist.

She is a dangerous solution, fully aware that her own existence is temporary.

Quiet, clear-minded, physically and spiritually scarred, Vesper acts not out of idealism, but necessity. She knows that if her seal were ever to fully close, she would cease to be human—and the world would be left facing something far worse than a curse.

The center sceal on her lower breast