[quote=@TheWindel]
Eris must not be that good of a delinquent if Yoshino hasn't gone all Satsuki on her yet.
[/quote]

I thought that they wold have a back story together, but this is just the first school day I'm in, so... Though, that's the second year of Eris on the academy, so Yoshino sure knows of Eris' attitude problems.

Even then, I gotta say that Eris is a unique delinquent type, since she's still very smart (her grades are above average), polite (when she wants to) and girly (though she would kill someone who said that), she just chooses to spit on society's face and do things her own way. Getting in fights and other problems are just part of that.