The Golden Age of Magic (魔法黄金期 Mahō kogane-ki ) occurred after the Witch Hunts of the Middle Ages up to the Industrial Revolution. When the persecutions ceased, witches were able to use the art of magic openly, adopting their talents for the benefit of mankind. As machinery did not exist yet, people relied on magic for everything. Magic began to be seen as a wonderful practice and witches were celebrated as the epitome of human wisdom. As a result, many women became witches.
However, the Golden Age of Magic came to an end when machinery begun to be created and humans stopped believing in the power of magic. As a result of this decline, the cosmic tree Yggdrasil, the source of all witches' infinite magical power, withered away and its remaining branches became the Ley Lines.