Story of Athena, The Street Fighter.

A girl who was raised as a street fighter her entire life, then during one fight she gets knocked out. In the hospital, a family takes her in, falsely. They pretend like they were her actual parents throughout her entire life and her birth parents have no idea where she is currently.
Her boyfriend, at the time before she got knocked out, moved hours and miles away from the town they were from to escape the memories of Athena. Then he sees her in a coffee shop in LA and is shocked that shes even alive, but she doesn't remember him.