Only one thing to do...transfer schools...
That really does seem like the simplest and best way to get away from her
Im gonna assume that the person who was watching is one of the security watching the blonde girl (Na-MI I think her name was...)
Picture Erina dad's face right now......Done? Now picture him saying "Sempai notice me!" (≧∀≦)
That scene looks familiar...(≧∀≦)