Yoriichi Type Zero

Item from Demon Slayer by Koyoharu Gotouge

A 300-year-old mechanical training doll with six arms built to replicate one swordsman's movements — because five arms weren't enough to simulate Yoriichi Tsugikuni's speed.

Also known as: Type Zero, Yoriichi Doll, The Battle Doll, Mechanical Doll

What They Know

• A Sengoku-era mechanical training doll with six arms, each wielding a katana — designed to replicate Yoriichi's swordsmanship
• Required six arms because five weren't sufficient to simulate Yoriichi's speed and technique — and was still considered an imperfect approximation
• Maintained by the Kotetsu family of the Swordsmith Village across multiple generations
• Contained a hidden Sengoku-era Nichirin blade inside its chest — this blade became Tanjiro's final weapon
• The blade inside was from an era when Sun Breathing was actively practiced, making it particularly suited for Tanjiro's technique

Connections

• modeled_after — yoriichi
• maintained_by — kotetsu
• located_at — swordsmith_village
• contained_blade_for — tanjiro

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