Kireru Hyoujin

Kireru Hyoujin, created by a Kaiu weaponsmith, was once the sword of Yasuki Fumoki, a legendary pirate who was thought lost with his ship, the Deathless, in the Sea of Shadows in the 7th century. Fumoki died fighting a great tainted orochi in the corrupted waters.

Recovered
In 1158 the blade was found in the Island in the Mist by Ikoma Otemi, and his companion Matsu Kenji wielded it to kill the King Orochi. The Lion Geeneal brought the blade back to mainland Rokugan.

Abilities
Kireru Hyoujin was a katana which glowed with golden light in presence of the Shadowlands Taint. Its supernatural sharpness allowed the wielder to severe an opponent's limb with ease.