From Onigiri Gakuen, edited:
On her way home, Madoka feels she is being followed. She panics and starts screaming out. But it turns out the boy was just trying to return the train pass she dropped. He storms off, leaving behind his bag. At home, Modaka has trouble getting along with her abusive step-brother Shouta. After school, Modaka decides to take the bag back to the boy who dropped it, as on the bag it said "Fujima Hall". She's discovered by a lady outside who drags her into the hall, inside is a karate session. After watching them practice, Madoka begs Atsushi to let her join.