One that comes to mind is 'Manga X', where the main character, a kemonomimi, faces a lot of bullying. It's got a deep story and interesting characters.
Sure. Once there was a boy who was constantly bullied at school. He was small and shy. But one day, when a group of bullies were picking on a younger kid, he decided to stand up. He used his intelligence and quick thinking to outwit the bullies. After that, he started to learn self - defense and became stronger. Eventually, he saved his whole school from a dangerous situation, thus becoming a hero.
In many cases, the manga presents a detailed account of the bullying incidents and their impact on the girl's life. It might also show how she finds support or overcomes the challenges.