Minamoto no Raikou

Minamoto no Raikou was the head of the Minamoto clan during the Heian period and was Japan strongest Mystic Slayer. During her younger years, her father raised her to be a cold-hearted warrior. However, when she later adopted Sakata Kintoki, her motherly persona bacame strong and she would become more gentle. Later into her life, Raikou would slay many dangerous Yokai's, including the oni Shuten-Doji.