Magical Girl Lyrical Nanoha - S01

Fuuka Reventon is aggressive and often gets into fights as she struggles to make a living. One day, she gets into an altercation with gangsters that leaves her injured; luckily, martial arts champion Einhald Stratos finds Fuuka and takes her to a hospital. Seeing potential in Fuuka's skills, Einhald encourages the girl to become a martial arts athlete and offers her a job at Nakajima Gym, where Einhald trains. Despite the kind gesture, Fuuka initially turns down the proposal because of the bad memories it brings. She was once childhood friends with the now prominent martial arts athlete Rinne Berlinetta, but the personality of her fellow orphan shifted from kind and gentle to cold and cruel after being adopted by a wealthy family and starting martial arts. Even so, Fuuka soon accepts Einhald's offer and begins training under her, not only out of necessity but also out of the desire to defeat Rinne and make her realize how hurtful her behavior has become. Despite Fuuka's inexperience, Einhald and the other members of the gym have faith in her talent and efforts.