No he is not a demon. But he seems to created from a swordsman, Mibu Kyoshiro, using his evil side. They had a duel in the middle of a battlefield and got defeatded by Kyoshiro who later imprisoned kyo soul into his own body and seal kyo's body away. And yeah he welds a long sword, called Muramasa.The sword is supposed to be a demonic sword.
19-Aug-2004