Diana Cavendish/Plot

Diana is born into a family of aristocrat magic users. While much of her backstory is not shown, she nonetheless attended the very Shiny Chariot show Akko went into in her youth, which inspired her to become a witch. However, their common idol's bad reputation in the eyes of conservative magical families forced her to keep her admiration towards Shiny Chariot a secret. This didn't help by the fact that Shiny Chariot's own methods to inspire people admittedly left much to be desired in some respects (failing to leave lasting positive impact outside inspiring her and Akko), the only thing she agreed with.

A descendant from a long line of aristocrat witches, Diana demonstrates high aptitude for magic at a young age. From a young age, she had a great admiration for Shiny Chariot, but because of Chariot's bad reputation in the magical world, she kept her admiration of Chariot secret and didn't attend any of her shows. However, her mother arranged things so she could go secretly to one of her shows in Japan, the same show as Akko attend. Diana was enchanted by the show, and developed a great passion for magic. However, due to the Dream Fuel Spirit that Chariot used on the show, Diana lost her ability to use magic. However, she did not give up and tried daily to regain her skills, which she finally achieved.

Diana's parents died while she was young. Before dying, Diana's mother, Bernadette, told her stories about the Olde Witch Beatrix Cavendish and expressed her wish that she could create a new future for magic.

While growing up, Diana had to face the expectations of being the heiress of the House of Cavendish, which led her to abandon her dreams as a child and put aside her admiration for Shiny Chariot. However, she still decided to attend Luna Nova Academy because it was the school Chariot attended.
### Little Witch Academia

Years later, Diana attends Luna Nova but mocks Akko for liking Shiny Chariot. She demonstrates her magic skill by vaporizing a dungeon monster.

In her arrogance, she opens a cursed iron maiden and releases an ancient dragon that grows stronger by devouring magic spells. After being humbled, she attempts to evacuate the other students. She later saves Akko from falling to her death by catching her. Akko suspects Diana knows more about Chariot then she lets on, which she hurriedly denies.

### The Enchanted Parade

Diana saves a classroom from being devoured by a mushroom monster, created by Sucy and Akko's ingredients, with a nullification spell. Diana continues her cold demeanor and mocks Akko's parade plans. She later gloats about how Akko's plan fell through after Sucy and Lotte abandon her, but unwittingly gives Akko the idea to use the Shiny Rod as a magic battery for the parade.

She later works together with Akko and Amanda to keep the Shiny Rod out of the Titan's hands, expressing relief that Akko is safe and gives begrudging approval of Akko's performance.

### TV Series

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#### A New Beginning

Diana first appears during the opening ceremony of the academy with Hannah and Barbara. Though not shown, it's safe to assume that she's among those who surprised by Akko, Lotte, and Sucy's unexpected entrance via. a Ley Line portal right at the center of auditorium.

#### Pappiliodya

Diana is shown expertly translating the passage on the board written in Luna Alphabet during Finnelan's class, much to the awe of her fellow students. She later nonchalantly uses Object Control Magic to dispel the fume from ominous-looking potion Lukić brew as part of her lecture and even corrects Badcock who made a mistake in the middle of her lecture.