InuYasha - Bankotsu's Banryu Wooden Anime Sword 52"

Banryu is a unique variation on the giant halberd wielded by Bankotsu, leader of the Shichinintai. The origins of the weapons are never revealed; some fans speculate that is was either forged by To-to-sai or Kaijinbo-, others claim that Bankotsu himself forged it. In the anime, Bankotsu claimed that he had long ago made a wish upon his weapon in order to become strong. Since he was born human, he was not able to possess divine powers by bloodline alone, yet he did not have the desire to train in order to obtain supernatural powers. What he wanted but did not have was demonic powers. In order to fulfill his promise to Banryu, he had to kill 1000 warlords and 1000 demons. Once fulfilled, Banryu transformed into a demonic weapon capable of releasing blasts of heat energy at opponents in a similar fashion to that of the To-kijin. However, such events never occurred in the manga.