The name of Rikiddo Unabara's giant, broad sword that is first wielded by Zabuza. The circle cut out of the top and the semicircle near the handle, as demonstrated by Rikiddo later , seem to fit its purpose of decapitation aptly. Its handle also appears to be detachable, as Rikiddo is shown screwing it off when not in combat and reattaching it for combat.