You date a girl of a certain type of dere that you choose and meet. She will act like their dere, act and do what they try to do to you. She has a charming body and is really your type. Even though their dere is quite attractive, you can broaden the event and their liking for you with the right interaction with her. Like dere's personality, she will probably do surprises or something inappropriate if you ask her or when you want something new about your girlfriend.