Akkuai-uo

Is the Ancestral sword of the Hantei. Its current whereabouts are unknown, as its last owner was Iuchiban.

History
Akkuai-uo was forged for Hantei Genji by the legendary swordsmith Yasurugi. The fifth Hantei was the first to wield it in battle, and his victory awakened the soul of the sword, granting it incredible powers against the Shadowlands. The sword was returned to Otosan Uchi, where it remained until Hantei XXXIX, possessed by Fu Leng, drove the sword into Hida Kisada. Crab Champion Hida Yakamo fled Otosan Uchi with his father and the sword, and kept the sword until he was captured by Kuni Yori in the Shadowlands.

When Yori was banished form the mortal realm by the Naga, the sword was abandoned in Shinomen Forest, as the Naga were unaware of its significance. A band of Monkey Clan magistrates returned it to Lady Shinjo, who set it in the Celectial Heavens with the other ancestral swords. When Fu Leng invaded the heavens, the Shadow Dragon followed, and for reasons known only to itself, the dragon took Akkuai-Uo and brought it back to the Shadowlands. It gave the blade to Omoni, who gave the blade to the lord Daigotsu, who could weild the blade because he was of the Hantei line.

When Daigotsu drew the blade in the Temple of the Ninth Kami, Fu Leng placed his blessings upon it, tainting and corrupting the blade's magics against the darkness of the Shadowlands. Daigotsu kept the blade until the City of the Lost was invaded by Iuchiban. Badly wounded, Daigotsu was forced to leave the blade behind during his escape. As Iuchiban was also of the Hantei line, he was able to wield the blade safely, and kept it as his personal weapon. This forced many who had sworn fealty to the wielder of the blade (such as Omoni) into Iuchiban's service. (SoS p.8)

Powers
Akkuai-Uo is an impressive blade, large by No-Daichi standards. Made of a pure golden metal, it glows with a corrupted black fire when wielded by a Hantei. The sword was once powerful against the Shadowlands, but now focuses energy against those not yet corrupted.