Yuuji's mother. She can seem gentle but she's strong and very intelligent. Her husband, Kantarou, works outside the country. Chigusa remains ignorant of Shana's and Yuuji's true nature, but becomes a source of good advice for Shana on matters where Alastor can not counsel her. The Crimson Lord himself acknowledges and bows to her wisdom after a phone call between the two of them when he posed as Shana's guardian.