Celtic Mythology

Celtic Mythology is the mythology of the Celts, a group of tribal societies present across Europe during the Iron Age and in Medieval times.

In Toaru Majutsu no Index, Celtic Mythology is used as a base for certain forms of Magic.

Uses of Celtic Mythology in the story

 * Fragarach: The sword of Manannan mac Lir and Lugh. When held at one's throat, the sword was said to prevent them from telling a lie, hence its name, meaning 'Answerer'.
 * Fragarach was one of the weapons analyzed by the Knight Leader in his development of Hrunting.