Jumidoro

There was a young gladiator girl who was famous in the Colosseum, her name is "Invincible Sword" Ramune. Ramune was bought as a slave, but unexpectedly became free due to a horse-drawn carriage accident. A girl that doesn't know what "normal" is, lives her life by seeing the world, learning, and being touched by the kindness of people.

(Source: Kodansha, translated)