Takatsuki Yuuna

Sawako's daughter. She used to be a serious girl who disliked indecent things, but now she's a love-struck maiden who tries hard even at indecent things.

She respects her mother Sawako, but still feels resistant and hesitant about becoming as shameless as her.

Because the people around her are exceptionally shameless, she doesn't really feel aware of her own shamelessness and thinks she isn't shameless yet.

"I'm only shameless with you, Teacher!"

From official site