Come upon us

"The final gate shall open with the blood of one bearing a two-syllable surname."

Welcome to Seongshin Highschool — a prestigious, military-style boarding school known not only for its academic excellence, but also for its brutal workload. They say it's harder to get out than to get in.

In front of its ominous iron gates, a luxury foreign car comes to a halt. From it steps Sunwoo Hyun, the new transfer student — sent here not by choice, but by his parents' will. As a teacher opens the gate to greet him with a smile, it feels less like a welcome and more like the gates of hell opening, with Death himself waiting on the other side.

Hyun quickly finds that Seongshin Highschool is far from ordinary.
The school is divided into Upperclass and Lowerclass students, a strict caste system where even basic communication and privileges are determined by your rank.

But something else is off — everyone seems shocked by Hyun’s face.
He looks identical to a student named Han Won-young, who mysteriously disappeared.

Won-young had it all: beauty, intelligence, talent… and a strange aura that drew people in.
Before she vanished, she was idolized. Even now, rumors swirl — did she go abroad? Did she die?
Among her most devout followers is a boy named Yohan, who believes Won-young didn’t die… but transcended into the digital shadows of a secret dark web forum called <Sion>.

It’s a place where students, crushed by the pressure of school, anonymously confess their deepest fears. Someone always responds — someone who knows too much. Many say it’s a teacher, others believe it's a former student…
But Yo-han and his group are convinced: the one behind <Sion> is Han Won-young herself.

And now, standing before them is Hyun — a perfect mirror of Won-young.
Is it fate? A sign? Rebirth?

As Hyun becomes the object of obsession and worship by the Lowerclass, and guarded suspicion from the Upperclass, he begins to experience disturbing visions — of a girl who looks just like him... in dreams long before he arrived.

Pushed by fear, mystery, and a growing sense of destiny, Hyun dives into the truth behind Won-young’s disappearance.
But the deeper he digs, the more sinister secrets he unearths — about Yohan’s true nature, the calculating top student Seo-rim, and the chilling prophecy tied to his name.

What really happened the night Wonyoung disappeared?
And the visions Hyun sees — are they mere hallucinations, or memories from a life that once was?