Blue Moon
Akko comes to Ursula late at night to ask her about Chariot's disappearance, but doesn't get much help from her. In her studies, Diana discovers that his ancient power is sealed in Arcturus Forest, and can only be released when the Shiny Rod activates seven ancient words. Akko takes the Shiny Rod with her to a place known as the Blue Moon Abyss. Reaching the center of the abyss, Akko confronts the spirit, who offers to grant her dream of being a great magician like Chariot in exchange for her past memories.
Aired 20/03/2017EP 11 - Blue Moon

Little Witch Academia (TV)
In a time when magic is on the decline amid society, Atsuko Kagari is a cheerful girl who enters Luna Nova Academy in order to accomplish her dream of becoming a witch like her idol, Shiny Chariot. Shiny is a famous witch who disappeared from public view many years ago. On her way to school, Kagari meets the kind Lotte Yanson and the mischevious Sucy Manbavaran and the three become friends as they share a bedroom in campus. At the academy, Atsuko soon discovers she is in serious disadvantage compared to the other girls since she doesn`t come from a magical family and is required to learn the magical curriculum from scratch. Having found an item that once belonged to Chariot, Atsuko must discover how to activate and properly use the mysterious Shiny Rod as she hopes it might lead to finding out what has truly happened to her vanished idol.
(Source: Anime News Network)