Demon Sword

The opposite of Holy Swords, unlike the Holy Swords that uses Holy powers from God, Demonic Sword uses Demonic powers from the Satans. The known Demonic Swords are:

It is possible for a Holy Sword to become a Demon Sword, as with the case of Arondight.
 * Gram (グラム Guramu)
 * Balmung (バルムンク Barumunku)
 * Nothung (ノートゥング Nōtungu),
 * Tyrfing (ディルヴィング Diruvingu)
 * Dáinsleif (ダインスレイヴ Dainsureivu)