The room beyond swallowed sound.
It was enormous. Bigger than the entire apartment, bigger than the public training halls, a private world folded into a rectangle of space. The ceiling stretched high enough that it faded into shadow. The floor was a seamless expanse of dark stone, smooth but textured just enough for traction. Lines of faint violet light traced geometric patterns across the ground, pulsing slowly like a heartbeat.
The air inside felt dense.
Not heavy, but reinforced. Structured. He could feel Belle's authority baked into the walls, a quiet promise that nothing he did here would leak out and tear the city in half. The space welcomed violence and contained it with polite certainty.
He stepped inside and closed the door.
