Clyde waited a measured interval — long enough to be certain the last student had cleared the immediate vicinity, short enough that whatever was in the corridor would not interpret the delay as hesitation. Then he moved through the classroom's side door into the adjacent corridor — the rarely-used passage that ran parallel to the main hall, its lanterns burning at wider intervals, the lamplight reaching only partially into the spaces between them and leaving stretches of blue-tinged shadow where the cobalt bleed from the high windows above contributed its cold quality to fill the gaps.
He steadied his breath.
He opened his Hollow Eyes.
The corridor resolved into its additional layer — the heat signatures in the stone, the ichor traces drifting at mid-height, the structural information of the building's architecture becoming legible in a way that ordinary sight did not access. He turned his perception toward the main corridor, through the wall between them, and found what was standing on the other side of the classroom door.
The figure resolved slowly.
Not because his perception was insufficient — it resolved slowly because the figure was actively managing what his perception could receive, suppressing its ichor signature with the practiced, layered technique of someone who had been doing this long enough to do it as naturally as breathing. What came through despite the suppression was not the figure's full presence but its residue — the way a very large object casts a shadow even when the object itself is not in direct light.
The shadow was enormous.
A man. Formally dressed — the detail that arrived first, the precise, intentional quality of the clothing carrying its own frequency in the way that things do when they have been chosen with care. A white long-sleeve button-up shirt. A black blazer. A black tie knotted with the precision of someone for whom the precision of such things is a considered position rather than a habit. Black trousers. Long black hair worn down — falling to the shoulders, the particular style of someone who has made a deliberate decision about how to wear it and has worn it that way long enough that the decision has become identity.
Light facial hair — noticeable but maintained at the threshold of deliberateness, the kind of facial hair that has been grown and managed rather than simply allowed.
His face, in the Hollow Star's perception, carried the inverted triangle structure of features that concentrated downward — a broad forehead, a jaw that narrowed with the particular geometry of someone whose face has always had that quality and has worn it into something that reads as composed rather than severe. His eyes, when the Hollow Star resolved them through the wall and the suppression and the distance — brown. Shot through with flecks of something that the perception received as gold-adjacent, a quality of light in the iris that was not reflected but internal, the same way the bioluminescence of the centipede had been internal.
He was forty-five, perhaps, in the way that certain people are forty-five — not diminished by it, not concealing it, simply inhabiting it with the particular authority of someone who has had forty-five years to determine exactly who they are and has arrived at a conclusion they find satisfactory.
He stood beside the classroom door without moving.
Without fidgeting. Without the small, unconscious adjustments that people make when they are waiting and are aware of waiting. He stood the way things stand when standing is a position chosen rather than defaulted to — with the composed, absolute stillness of someone for whom patience is not the management of impatience but simply the natural state of someone who has decided to be patient and has nothing further to manage.
His ichor.
Clyde's Hollow Eyes reached for it and received, through the suppression, only its outermost edge — and that edge alone was sufficient to produce a response in his Astral Card that his body registered as a full-system alert.