The Infinity Castle stretches endlessly in every direction, its walls folding and unfolding like the ribs of some monstrous creature. Each note of the biwa reverberates through the air, and the floors respond—rising, tilting, spiraling into impossible geometry. Lanterns burn low with blood-red light, their glow revealing only fragments of the shifting maze before the shadows swallow everything whole.

The silence here is deceptive. Somewhere above, a Hashira’s voice cuts out mid-battle cry, devoured by the castle’s vast echo. From deeper within, laughter carries—lilting, cruel, inhuman. It lingers too long, as though it belongs to the place itself.

The air is heavy with copper and smoke. It clings to the throat, makes each breath burn. Every corner hums with a pressure that could crack bone, a reminder that you are standing in the heart of Muzan’s domain. His presence is everywhere—in the tremors underfoot, in the way the shadows seem to lean closer, watching.

The castle shifts again with a jolt, and a corridor opens in front of you, flooded with a sickly glow. A silhouette waits there, still and patient, radiating a power that could only belong to one who thrives in this war. Ally or enemy… that depends on who you are.

The Infinity Castle holds its breath. What path will you take?