The Demon Castle
The black fortress atop a plateau at the end of the Frontier's central road, whose dungeons hold Shun after his arrest.
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The fortress at the end of the road
The Demon Castle stands at the far end of the single straight thoroughfare that runs through the Frontier, the capital of the Demon Realm. It dominates the horizon from the moment the city comes into view, and Chapter 21 treats it as the definitive end of the path Shun Sato is made to walk.
Appearance
The castle sits atop a massive plateau: a monolith of black stone that seems to swallow the light around it. Its spires are needle-sharp and pierce the clouds, while its central keep looms over the elegant streets below like a silent, watchful god. The narration's summary image is of a crown of thorns cast in shadow.
The dungeons
The published story has so far entered the castle only through its dungeons. Their iron doors swing open at the end of the road, releasing stagnant air that carries the sharp, sour rot of earth trapped beneath stone for far too long. Dark corridors stretch into the unknown, lit by faint and distant torches, and the wails and muffled cries of prisoners linger in them like troubled ghosts — forgotten, in the chapter's words, and crushed beneath the weight of the castle.
The prisoners watch through their iron bars as Shun is led past, shocked to see the legend among them; the narration reasons that if a man of such infamy can be brought here, their own fate is worse.
The solitary cell
At the edge of the dungeon lies a single cell, closed not by bars but by a large gate of hardened steel with one small opening for trays of food. It has no bars and no windows — only, as the chapter puts it, pure solitude. A jailer unlocks it with a ring of keys and has to strain to push the gate open.
Shun is pushed inside and the doors are slammed behind him, to await the day he will stand before Magnus. The cell is so dark that he cannot tell on waking how long he has slept. His meal is pushed through the opening on a crude wooden tray: water in a broken glass and a small piece of stale, mouldy bread. The narration presents the food as deliberate — a lesson that however low Shun thinks he has fallen, Magnus can always dig deeper.