DxD Study Girl

If you met these two during a study session and saw their feet, what would you say to them?

His and Her Circumstances (Kare Kano): Tsukino Miyazawa

 Tsukino is the middle child of the three Miyazawa sisters.  She is playful when it comes to her younger sister and supportive of her older sister.  After graduation she becomes a professional tennis player and then a coach.