ViVid Strike!

Fuuka and Rinne, former friends from an orphanage, drifted apart after a fight ended with Rinne dominating Fuuka in a martial arts contest. Fuuka struggled to make ends meet after leaving the orphanage, but her life took a turn when she encountered Einhald Stratos, a well-known martial arts champion, who discovered her latent fighting abilities. This led to Fuuka being offered a job and coaching under Einhald, who also encouraged her to reconnect with Rinne in a competitive setting.