Treasures of JapanA catalogue of Japan's designated cultural properties
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National Treasure

Blade for a Long Sword ("Tachi"), Named “Dōjigiri Yasutsuna”

太刀（名物 童子切安綱）
Blade for a Long Sword ("Tachi"), Named “Dōjigiri Yasutsuna” (太刀（名物 童子切安綱）)
PLATE IImage: Tokyo National Museum, via ColBase — CC BY 4.0
At a glance — Swords & Armour · Heian period · held by Tokyo National Museum · designated National Treasure of Japan · Houki Yasutsuna.

Fact Sheet

Designation
National Treasure (国宝)
Date
901–1200
Creator
Houki Yasutsuna (伯耆安綱、大原安綱、安綱)
Location
Ueno, Tokyo
Catalogue ID
cobas-178038

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This blade was crafted about 1,000 years ago by the master swordsmith Yasutsuna. According to legend, it was used to slay a drunken demon who terrorized Kyoto. The sword was named Yasutsuna's Demon Cutter in honor of this exploit. Today, it ranks among the Five Greatest Swords of Japan for its legendary status and craftsmanship.

— Museum description: Tokyo National Museum (CC BY 4.0), via ColBase / Japan Search.

Record & Sources

Cite this page: “Blade for a Long Sword ("Tachi"), Named “Dōjigiri Yasutsuna”（太刀（名物 童子切安綱））.” Treasures of Japan, catalogue no. cobas-178038. Tokyo National Museum. https://treasures.yamato-kenkou.com/treasures/blade-for-a-long-sword-tachi-named-d-jigiri-yasutsuna/ — entry last verified 1 November 2026.
Full record data (as published in the official catalogue record)
  • Cultural property designation: National Treasure
  • Genre: Arms & Armor
  • 員数: 1口
  • 分類: 刀剣
  • 銘文等: 銘 安綱

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