She'd earned her spot at school through a sports recommendation, but never made it to the inter-high—a disappointment that stuck with her. That failure planted a seed: she desperately wanted to be fast, to actually run. She got her wish, though the price was steep. Her body transformed into something inhuman, monstrous.
When she spotted Shuichi Kagaya and Claire Aoki with a coin, she attacked them. They killed her in the fight that followed.
Content compiled by AnimeList.moe from publicly available sources.
