Little Witch Academia - OVA Subtitled

Akko Kagari is a girl who joins an academy for young witches after being inspired at a young age by a witch named Shiny Chariot, and often spends her days hanging with her classmates, Lotte and Susy. However, she has trouble paying attention in class, doesn't know how to ride her broom, and is often looked down upon for admiring Chariot, whom many believe gives the wrong impression about witches. One day, as the class is instructed to explore a dungeon and retrieve rare treasures, Akko finds the Shiny Rod that belonged to Chariot. Meanwhile, the top student, Diana Cavendish, inadvertently breaks a seal on a dragon that grows more powerful by absorbing magic. Noticing the Shiny Rod still has power after all these years, the teacher sends Akko and her friends to reach the Philosopher's Stone, the source of the academy's power, before the dragon can devour it and become invincible. Arriving at the stone, the Shiny Rod absorbs some of its power, allowing Akko to fight against the dragon. Put into a desperate situation, Akko remembers Chariot's words, that magic comes from the power of believing, and uses the full power of the Shiny Rod to destroy the dragon.