A fantasy illustration of a dark, crystalline cave with a glowing river and a small figure sitting by its bank.

Beneath all layers of the world lies Nocturn, a hushed and sacred cavern realm bathed in gentle darkness. Here, night is not feared — it is revered. There is no sun, no stars, no wind — only a vast, velvety sky of shadow. Yet the darkness is never oppressive. It glows. It comforts. It hums with a serenity that cannot be found in any of the layers above. Crystalline formations sprout from the ground and cavern walls like delicate blossoms frozen in time, casting subtle hues of violet, soft blue, and pale pink. The air carries a quiet shimmer, as if filled with stardust that never made it to the sky. Some crystals sing when the breeze stirs, resonating with distant notes that echo memory and emotion. Cutting through the realm like a silver ribbon is the River of Memory, a glowing, ever-flowing current of light. Its waters are not ordinary — they are made of memories, hopes, forgotten dreams, and quiet feelings too gentle for the waking world. The river glows in shifting colors, soft and warm, as if lit from within by the soul itself. When one sits beside it, they may hear distant laughter, a lullaby from childhood, or the whisper of a name they had long forgotten. Tiny beings known as Nocturn Pixies live here — specks of colored light no larger than a grain of dust. They drift through the air like fireflies, each one carrying a single memory, emotion, or wish. Their presence is felt more than seen — a tickle on the cheek, a faint glimmer in the corner of the eye. They are the See more