Darkness. Absolute nothingness. Then, the smell of burning pine. It hit my nostrils like a physical punch. I opened my eyes. A soot-stained ceiling loomed above. Not a ravine. Not the snow. I was on a futon, pinned under heavy, coarse blankets.
I tried to breathe.
Fuck.
Agony. A white-hot needle of pain shoved straight into my left lung. My torso was wrapped in crude, tight cloth—a tourniquet to keep my shattered ribs from puncturing my organs. Every micro-movement was a gamble.
"He's awake! Mom, he's awake!"
A kid's voice. High-pitched.
I turned my head. Neck muscles felt like rusted steel cables. The room was a cramped, miserable mountain hut. A hearth flickered in the center, casting jagged orange shadows. A woman stood by the door. Behind her, the boy from the snow. The one with the charcoal basket.
"Don't move," the kid said. He was covered in soot, eyes tired but intense. "You lost a lot of blood. Your ribs are a wreck. If you jerk around, the lung collapses again."
I rasped, throat like sandpaper. "Where..."
"Up in the mountains. I found you in a ravine off the northern slope," he answered. He moved with clinical efficiency, passing me a cup of water. He held it to my lips, steadying my head. His hands were calloused—the hands of someone who grinds every single day. "I'm Tanjiro. You're in my home."
I scanned the room. Kids peeked through the sliding door. Poor, ragged, but the air wasn't heavy with rot.
My eyes drifted to the corner.
Kū-on.
Leaned against the wall. It looked like shit. Chipped, blood-stained, dulled by shale. But it was there.
I locked eyes with Tanjiro. The math didn't add up. This kid had hauled my weight up a vertical incline in a blizzard, carrying a full load of fuel, and he wasn't even winded.
"How?" I rasped. "Carry me up here without dying?"
He gave a small, embarrassed smile. "It's just rhythm. If you breathe the right way, the weight gets lighter. My father taught me."
Breathing. That word again. The masked boy on the ridge used it to kill. This kid used it to sell coal.
"Was your father a swordsman?"
Tanjiro shook his head. "No. Just a charcoal burner. But he knew how to move without burning his energy. He said the breath is the key to not getting eaten by the cold. It's the difference between a corpse and a man who keeps walking."
I went silent, staring at the ceiling.
I was in a house of mountain kids using killer-level breathing techniques just to survive the winter.
I was going to learn how they did it.
I shifted my weight, feeling the ribs grate against each other. The pain was sharp, immediate, a warning sign from my own anatomy. Ignore it. I needed to move, to stand, to find out what kind of lung capacity this kid was hiding. I tried to focus my diaphragm, forcing the air in the way he described. It was awkward. My chest muscles seized, the scar tissue from the previous fights acting like a barrier to the movement.
I didn't care. If I didn't master this, I was dead. The sword on the wall was a paperweight until I could find the strength to swing it again without collapsing.
"You're too weak," Tanjiro said, reading the tension in my shoulders. He didn't say it with pity. He said it like a medical fact. "You need to heal. Your rib cage is compromised. If you force the expansion, the bone splinters will tear the pleura. You will drown in your own blood."
He didn't know I had been drowning in blood for months.
"Show me," I said, my voice barely a whisper.
"Show you what?"
"How you move the air."
He hesitated. The woman by the door moved closer, her expression shifting from concern to caution. They knew. They were hiding something deeper than just a trick for carrying coal. This was a lineage of movement.
"It is not for training," Tanjiro said, his tone turning colder. "It is for living. You are a fighter. You want to use it for death."
"I want to stay alive," I countered. "You found me in a ravine. You saw the marks on my skin. You know I'm not just some lost hiker."
He looked at my chest, at the messy bandages he had wrapped around me. He saw the damage. He knew exactly what had put me in that ravine.
"The snow is not just cold," Tanjiro said, his eyes darkening. "It hides things. Hungry things."
He leaned in closer, his voice dropping to a low hum. "My father, he didn't just burn coal. He danced. He moved in a pattern that kept the air flowing, even when the blizzard tried to freeze his lungs. You want to learn? You have to start by learning to be still. Your heartbeat is erratic. You are terrified of your own pain."
He was right. I was fighting the pain, pushing against it with raw adrenaline. It was the wrong approach. I had to let the pain exist, keep the rhythm beneath it.
"Fine," I said. "Start with the stillness."
I spent the next three hours forcing myself to match his tempo. Every breath was a struggle against the structural failure of my own skeleton. My left lung screamed, trying to force me to shallow-breathe, but I clamped down on the urge. Inhale. Hold. Exhale.
The room began to blur. The fire in the hearth seemed to pulse in time with my own chest. The pain didn't go away; it changed. It became a background noise, a secondary input that I could tune out if I focused enough on the oxygen entering my blood.
Tanjiro didn't leave my side. He watched, correcting my posture with a hand on my shoulder, adjusting the way my ribs expanded. He was a master of his own internal engine, and I was a student with a broken machine.
"Deeper," he commanded. "Do not fight the rib. Lead it."
I followed. My vision darkened, then cleared. A strange heat started to build in my gut—not the fever of the infection, but a centered, focused warmth.
I was starting to see it.
I had been fighting the world with my muscles. These people were fighting it with their lungs.
I wouldn't just survive the mountain. I would consume it.
"Again," I said, my eyes snapping open.
Tanjiro nodded. He knew I had felt it. The threshold was crossed.
I would learn to breathe like them, or I would die trying.
Would you like me to move to the next sequence, or should we refine this training progression?