Location from Demon Slayer by Koyoharu Gotouge
Urokodaki's training mountain — a fog-shrouded peak where Water Breathing students learn to survive by nearly dying, and where Tanjiro spent two years cutting a boulder in half.
Mount Sagiri trains through environment as much as instruction. The fog mimics Water Breathing's philosophy — flowing, obscuring, adapting to what it encounters. Students run through the mist dodging traps Urokodaki has set: trip wires, deadfalls, and (according to rumor) boulders rolled down slopes at dawn. The mountain's thin air and cold temperatures build the lung capacity that Breathing techniques demand. The final test before Final Selection is cutting a massive boulder in half with a Nichirin sword. Tanjiro spent months failing at this until Sabito and Makomo's spirits guided him. The boulder sits split in two near Urokodaki's cabin, a monument to everyone who trained here.
A mountain perpetually wreathed in fog and mist — visibility rarely extends beyond thirty meters. Dense, ancient forest covers the slopes. The trails are treacherous: narrow paths along cliff edges, sudden drops hidden by fog, and uneven terrain covered in moss. Urokodaki's modest cabin sits in a clearing partway up the slope. Below it, training areas are marked by cut trees and split rocks — evidence of decades of Water Breathing practice.
Also known as: Sagiri Mountain, Urokodaki's Mountain