in which she is a secret street fighter.
a guy accidentally finds out that his "innocent" seat-mate is a well-known street fighter who never shows her face.
there are a few ways he can find out that she's a street fighter:
1. one time he sees the bruises on her knuckles that she tries to hide when she's coming notes down from the board. he confronts her about it but she denies, saying she accidentally hits her knuckles somewhere but it seems too suspicious so he follows her after school and discovers that side of here.
2. he happens to be a well-known street fighter too and has an encounter with her at the place.
3. his friends drag him to this street fight thing, saying "you have got to see this girl fight man." when congratulating her, he accidentally finds out about her identity somehow.
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personally i don't like idea 2 that much but it's still a possibility.
