What Is a “Cursed Sword”?
In Japan, a sword was more than a weapon.
It was a mirror of the soul — a symbol of power, pride, and fate.
Some blades were said to bring great fortune.
Others brought tragedy.
These were called yōtō — “cursed swords.”
1. Muramasa (村正)
The most famous cursed sword.
Forged by the swordsmith Muramasa, these blades were so sharp that they gained a dark legend:
every owner who carried one met misfortune.
It was said that even Tokugawa Ieyasu’s family — his father, grandfather, and himself — were all hurt by Muramasa blades.
Because of this, Tokugawa banned them.
In truth, Muramasa swords were simply excellent weapons — too sharp, too powerful, and too feared.
2. Kogarasu-Maru (小烏丸)
An ancient sword from the Heian period.
Its shape was strange — double-edged, like both sword and spear.
Legends say that when a crow (karasu) cried, disaster followed.
A sacred blade, but also one of mystery.
3. Juzumaru Tsunetsugu (数珠丸恒次)
The prayer sword of Saint Nichiren.
It was said to protect against demons and evil spirits.
Too holy to be drawn easily, it was kept wrapped in prayer beads (juzu).
A sword of both faith and fear.
4. Onimaru Kunitsuna (鬼丸国綱)
One of Japan’s “Five Great Swords.”
Its name means “Demon Cutter.”
A story says the sword appeared in its master’s dream and killed a demon haunting him.
From that day, it was believed to hold power over evil.
5. Murakumo (村雲江雪左文字)
The favorite blade of Toyotomi Hideyoshi.
After his death, the sword vanished — as if it disappeared into the clouds (murakumo).
People said the sword chose its own master and refused to serve another.
6. Kotetsu (虎徹)
A blade from the Edo period.
So sharp that people said it could cut through anything — even its owner.
Many feared to carry it.
Its “curse” was only its perfect edge.
The Meaning Behind the Myths
These swords may not truly be cursed.
They reflect human fear — and awe.
When a warrior lived and died by his sword, it was natural to believe the blade carried his spirit.
The legends remind us:
a sword can protect life, or destroy it.
It all depends on the hand that holds it.
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