Sakura

 Jeez, does EVERYONE in this anime support student-teacher relationships or what?? Why doe nobody question it AT ALL?

It's just plain unsettling, especially since she's supporting her own kid to do exactly the same thing. 

While she was in high school, she became involved with a teacher, became pregnant, married the guy, and dropped out to be with him. And somehow no one blinks an eye when this story is told. Even if she is a secondary character, I find her attitude and actions disgusting.