Eh, I believe I'm missing something. What was the message here? Are we suppose to side with Karen at the end? There's no way what she's doing is healthy.
@RaimundoBruno I don't think those stories are meant to show healthy relationships. The teacher who ran away to an arranged marriage she didn't want at all isn't in a healthy place at all either. Touma-kun isn't a "good" protagonist. She's more of a catalyst in my eyes. She changes people, for better or worse. She doesn't necessarily make them better.