Haruna's teacher at her magical school who has an affinity for Kyoto-made tofu and sends Haruna to get her some due to her credit cards being overcharged.
Ariel is the head teacher of the magical school for Magical Garment Girls.
Ariel is a supporting character in the Is This a Zombie? series that was created by writer Shinichi Kimura and illustrators Kobuichi and Muririn. The series originated as a light-novel series published by Fujimi Shobo's Fujimi Fantasia Bunko on January 20, 2009.
Her first light-novel appearance was in Is This a Zombie? Vol. ??, her first manga appearance was in Is This a Zombie? Vol. ??, and her first anime appearance was in Is This a Zombie? - Episode 5 "Yeah, That's Kyoto Tofu". Her character in the Japanese series is voiced by Ai Shimizu, and the U.S. dub produced by FUNimation is performed by Monica Rial.
Through most of the series, Ariel is only known by her job title Dai-sensei (大先生). Her given name is hardly ever used.