Display method and display system

A display system comprising:

• a first display device;
• and
• a second display device, wherein
• the first display device
• acquires a master image,
• acquires a first aspect ratio of a first display screen of the first display device,
• sets a first region in a master region of the master image based on the first aspect ratio, and
• displays, on the first display screen, a first image obtained by trimming an image portion inside the first region in the master image,
• the first display device or the second display device
• acquires a second aspect ratio of a second display screen of the second display device, and
• sets, in the master region, a second region having an overlapping region that overlaps the first region and a non-overlapping region that does not overlap the first region in at least one of a first direction and a second direction that are orthogonal to each other in the master region, based on the second aspect ratio, and
• the second display device displays, on the second display screen, a second image obtained by trimming an image portion inside the second region in the master image.