DISPLAY DEVICE, DISPLAY METHOD, AND STORAGE MEDIUM

A display device includes: a controller that determines a form in which to display a display object indicating a guide image based on a route (scheduled route) a vehicle is scheduled to drive on; and a display that projects light that forms the display object in the form determined by the controller onto a display medium in the vehicle that reflects the light toward a user in the vehicle, making the display object displayed beyond the display medium visible to the user as a virtual image. When a condition related to driving of the vehicle is satisfied, the controller determines the form so as to give the display object a shape corresponding to a view of the virtual image from an angle of depression greater than an angle of depression corresponding to a view of the virtual image from a viewpoint of the user.