The hidden underground escape route beneath the Central Tower.

Principal Lee Doo-hee was desperately clawing at the mechanical wall, her nails torn and bleeding. Despite Chae-yeon’s death, the exit remained firmly sealed.

This indicated that it wasn’t simply something created with magic, but an invention of pure ingenuity.

It had clearly been prepared beforehand.

There had never been a need to inspect this underground escape route.

From the beginning, Chae-yeon had planned to obstruct the principal in secret.

"Grrr...! Grrraaa..."

The principal’s face twisted as she scratched at the solid mechanical wall, eventually turning to look toward Chae-yeon.

Blood-soaked and …