Wakabayashi, Sokyō: Orgin story

[ KEEP IN NOTE; THIS IS A FAN MADE SPIN OFF SIDE STORY AS I DO NOT OWN THIS AMAZING WORK OF ANIME ]

Sai Wakabayashi is going to draft for her first high school. being raised in a traditional town and loosing her mother to a hero villain fight, Sai wants to finish her mother's dying wish. to be a hero in a chance to save the people around her poor city. but her family disagrees with her, mostly her grandmother. So will Sai make it into UA without flanking? Will she be a rescue hero as her mother was? Who was responsible for her death? The answer grips around at the end.