Display device, display control method, and storage medium

A display control method causing a display device to:

• superimpose and generate an image on a landscape and allow a viewer to visually recognize the image by an image generation device;
• control the image generation device by a control device;
• receive control of a display position of the image by an operation unit;
• generate a first image constantly displayed and a second image displayed on the basis of occurrence of a predetermined event by the image generation device;
• and
• change a display mode of one or both of the first image and the second image output by the image generation device on the basis of a content of the image generated by the image generation device and an operation content by the operation unit.

A non-transitory computer-readable storage medium that stores a program that causes a display device to:

• superimpose and generate an image on a landscape and allow a viewer to visually recognize the image by an image generation device;
• control the image generation device by a control device;
• receive control of a display position of the image by an operation unit;
• generate a first image constantly displayed and a second image displayed on the basis of occurrence of a predetermined event by the image generation device;
• and
• change a display mode of one or both of the first image and the second image output by the image generation device on the basis of a content of the image generated by the image generation device and an operation content by the operation unit.