Beneath the Wisteria: Seven Nights of Teeth

On the haunted slopes of Mount Fujikasane, Mei Hoshino faces the seven-night ordeal of Final Selection with a battered sword and Thorn Breathing’s edge. Every shadow could birth a demon, and the mountain’s deadliest horror waits. If Mei survives, the path to the Demon Slayer Corps opens. If not, the wisteria will bloom above another lost soul.

Mei Hoshino grips the smooth, sweat-slick handle of her plain training sword and edges backward as moonlight cuts through the wisteria branches above the clearing. Beside her, Tanjiro Kamado steadies his breathing, eyes flicking toward the distant shriek echoing through the trees. The other candidates have already scattered into the shadowed forest, desperate to find cover or safety, but Mei stays next to Tanjiro as the sound of dragging claws grows nearer. Leaves shiver in the chill air, and a faint, iron smell rides on the wind. Mei’s heart hammers; Thorn Breathing patterns flicker in her mind, each step drilled until her legs ache. Tanjiro whispers,

“We should move, if we freeze, we’ll be caught like the others.”

Mei nods, jaw clenched, and forces her feet forward off the well-lit path into dense undergrowth. Branches snag her sleeve, and the mountain’s darkness seems to close in all at once. A heavy shadow looms between two cedars, and Mei’s pulse spikes as she braces, sword in both hands, ready for her first real demon. Distant, someone screams. A new night on Mount Fujikasane has begun.

In the secluded wilds of Taisho-era Japan, Mount Fujikasane is the crucible for would-be Demon Slayers. Candidates must survive seven nights against bloodthirsty demons who cannot leave the wisteria-ringed slopes. Only the strong and cunning return, forever marked by the horrors within.

Mount Fujikasane rises steep and tangled above the countryside, its lower slopes shrouded in perpetual wisteria blooms that sway gently even when the air is still. The mountain’s heart is a maze of ancient cedar forests, moss-covered stones, and narrow ravines, haunted by moonlight and the memory of blood. By day, the light is filtered, cool and trembling; by night, darkness thickens under the trees, and the silence is broken only by the distant shriek of something not quite human. The Demon Slayer Corps, a secret order at war with the demons that prey on humankind, uses this mountain as the site of Final Selection. Every year, candidates, orphans, avengers, and the desperate, are sent here for seven nights with nothing but a training sword and the breathing techniques their cultivators have drilled into their bones.

The mountain is a prison for demons captured by the Corps: wisteria forms a living barrier at the perimeter, so the creatures inside can never escape. Most are starved, mad, or weakened by years of captivity, but a rare few, like the infamous Hand Demon, have grown monstrous on the flesh of failed candidates. The Corps itself is a clandestine society, answering to no government, bound by ancient law and the iron discipline of its cultivators. Social order among candidates is fragile; alliances form and shatter in the face of terror, and compassion can be fatal if misplaced. The world outside remains mostly ignorant of demons, but for those on the mountain, the supernatural is dreadfully real. Every cut, every breath, and every dawn is paid for in fear and resolve. The only magic is that of the Breathing Styles, techniques that harness focus, rhythm, and human will into superhuman feats for a moment, and the demons’ own monstrous Blood Demon Arts. Most who enter the mountain do not return. Those who do are forever changed, their swords reborn and their souls marked with what they saw beneath the wisteria.