Named after one of Ken Akamatsu's staff members, is an onmyodo charm user from the Kansai Magic Association. She was the one responsible for causing trouble at the beginning of the school field trip. She has very large breasts, and tried to prevent Negi from giving his letter to the chief of Kansai Magic Association, because she does not want relations between the Kansai and Kanto Magic Association to improve. Chigusa was the one who tried to kidnap Konoka due to the powerful magic potential that the young girl had. She bears a grudge against Western mages, because her parents were killed in the great magic war that both Eastern and Western mages fought in twenty years ago. She planned to have her revenge against the Western mages by summoning the demon god "Ryomen Sukuna-no-Kami", and the only way to do so was to gain control of Konoka's vast magical reserves. Despite having the ability to summon warrior spirits and creating shikigami, she also enlisted the help of three mercenaries to help in her plan. She was successful in summoning the demon god using Konoka's magic, but Evangeline defeated the demon easily. As a result, Chigusa's plan failed. She tried to escape but was captured by Chachazero, and is now under the custody of the Kansai Magic Association.
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