An image processing apparatus displaying an image of an appearance of a virtual object from a virtual camera to a head mounted display. Memories store programs including instructions for obtaining degree information indicating a degree of gaze for the virtual object of a user wearing the head mounted display and changing an optical axis position of the virtual camera. Selectively switching one of the images to another, includes a virtual image corresponding to an appearance of a virtual space from the virtual camera in which the virtual object is arranged, and a mixed image in which a captured image is overlapped by an image corresponding to an appearance of the virtual object, and the head mounted display displays the image as the display image, and changing the position of the virtual camera in the optical axis direction based on the degree information when the plurality of images is selectively switched.