A scientist researching on the 'Holy Grail's Fragment' while serving as a temporary lecturer at St. Cherine's Academy. She is a prodigy who graduated from a postgraduate program by skipping grades and utilizes her knowledge and skills for her own activities as an 'Ama no Tsukai'. Her weapon of choice is a pair of pistols. [Translated from the official site] She is actually Kurumi's aunt, who died in an accident eleven years ago. She assisted the time-traveling Kurumi and her friends in returning to the future and chose to remain in this time period herself, even after learning about her fate. In Tesla's route, she obtained the Holy Grail Clock dropped by Augusto, which enabled her to survive. She is a friend of Kasumi and Chihiro and regrets that if she had developed PokeTen one step earlier, she could have saved them.