Volume 9: Phantom of the Ancient Castle, Chapter 3: Madness

The Door slowly swung open, and under the illumination of the Sphere of Light Spell, every inch inside and outside the dark passage was visible, to everyone's surprise, the opening of the Door did not trigger any reaction, the brilliant light emitted by the Sphere of Light Spell pierced straight into the interior; the empty corridor inside seemed long abandoned, and as if unnoticed by anyone, a faint mist, like dust, silently seeped and permeated outward.

"What's going on? It doesn't seem like there's anything abnormal. Newman, are you sure this is the target we're looking for?" Rebry looked doubtfully into the empty space inside the Door,