Harvester, System, Program, Recording Medium, and Method

A harvester includes an image compositing unit and a display unit. The image compositing unit generates a composite image showing a vehicle body and the vicinity of the vehicle body based on shot images generated by a front camera , a rear camera , a first side camera , and a second side camera and vehicle body data stored in a storage unit. The display unit displays the composite image generated by the image compositing unit. The front camera is provided on a front part of a driving section , the rear camera is provided on a rear cover part , the first side camera is provided on an outer side part of the driving section in a left-right direction of the vehicle body, and the second side camera is provided on an outer side part of a threshing device