Seed of a Kishin
Demon Weapon TypeEdit
In the case of Demon Weapons, Demon Swords can be made from the result of over-hunting souls. Demon Weapons recognized as Demon Swords are often thought to be candidates for becoming a Kishin. This is, however, later to be disproven by Franken Stein, as he later stated the likes of a Demon Sword like that of Crona and Ragnarok ended up not showing any signs of truly becoming a Kishin.
Man-made Clown TypeEdit
For certain Man-made Clowns, they possess transformation powers to turn themselves into a Weapon not unlike that of a Demon Weapon and can also be recognized as a Demon Sword. The very nature of a Man-made Clown being a Demon Sword has remained unrevealed.