Punch!(2006)

Though Elle wants nothing to do with fighting, her grandfather has different ideas and betrothes her to an up-and-coming boxer from his own gym. She hates the idea and doesn't want to marry him. One day she meets a handsome street brawler who intrigues her, but her jealous fiancé finds out and goes after the guy! What will happen when a trained boxer goes a couple rounds with a scrappy street fighter?

(Source: VIZ Media)