Legend of the Five Rings: The Destroyers
A major nemuranai originally wielded by Akomachi, one of the kitsune twins who forged the original alliance with the nascent Fox Clan. Although shattered down to the hilt when discovered by the Imperial Cartographers in 1170, it was able to reawaken for a brief period through the katana of Toku Kiri to vanquish a pennaggolan undead.
The nemuranai fell completely dormant after the battle, but the blade was reforged by a Tsi smith at the request of the Imperial Cartographers, with the vow that it would not be used to ever slay any denizen of Ningen-do. The spirit of the Kitsune-no-Ken, however, had still not been awakened when it was last seen.