A display device to be disposed in front of eyes of a user includes a display unit having a right-eye region and a left-eye region, a detector configured to detect detection information enabling estimation of a direction of a line of sight of the user, a setting unit configured to set display region information indicating display regions of the right-eye and left-eye regions, and a controller configured to output the display region information and the detection information to a control device. After receiving an image including a right-eye image and a left-eye image corresponding to the display regions indicated by the display region information from the control device, the controller displays the received right-eye image in the display region of the right-eye region indicated by the display region information, and display the received left-eye image in the display region of the left-eye region indicated by the display region information.