Mikagari Mashiro

A young genius witch under the tutelage of Suzuko. But her sense of direction is left to be desired.

She is actually Kazuki, Shizuki and Mizuki's biological mother also Mion's older sister, Ichijou Misora (一条 美空) who was bound to the guardian deity​ system "Haru", lost her memory and was made younger through Haru's power over time.