Ancestral Sword of the Fox Clan

The Ancestral Sword of the Fox Clan was made for the Ki-Rin who stayed in Rokugan, eventually becoming the Fox Clan, to protect Ki-Rin lands during the Ki-Rin's Exodus.

Black Scroll
It was an exquisite blade, and sometime during the Third Century, it was taken from the Fox Clan by order of Emperor Hantei Genji. Genji had Togashi Nyoko reforge the sword and wrap the hilt with silk made from the Kami Shinjo. Beneath the silk was secretly, per Genji's order, hidden the Black Scroll The Walking Horror of Fu Leng. The sword was then stolen by the Scorpion Clan and hidden beneath the mountains by Otosan Uchi. As it was officially the Scorpion's duty to guard the Black Scrolls, it is very likely that Genji authorized the Scorpion to take the sword.

Recovery
In 1124, as part of her gempukku, Kitsune Ryosei infiltrated the sword's hiding place and retrieved it. To finish her gempukku, she brought it back to her father, Kitsune Gohei, who used it to open the scroll and become the Walking Horror of Fu Leng. After failing to kill Ryosei, Gohei escaped with the blade.