1. An image-selecting device comprising: a storing unit that stores a plurality of pieces of image data; a displaying unit that displays a plurality of images based on the plurality of pieces of image data and has a plurality of display regions for each of the plurality of images; a detecting unit that detects each of the plurality of display regions receiving direct input by an indicator; a reading unit that reads the plurality of pieces of image data from the storing unit; an identification data storing unit that stores identification data for identifying the plurality of pieces of image data read by the reading unit and assigns a prescribed order to the identification data; a display controlling unit that controls the displaying unit to display the plurality of images according to the prescribed order; an image data identifying unit that identifies each of the plurality of pieces of image data for the image displayed in the display region detected by the detecting unit; and an image data selecting unit that, when the image data identifying unit identifies two pieces of image data among the plurality of pieces of image data, selects or deselects image data from one image data of the two pieces of image data to the other image data of the two pieces of image data according to the prescribed order of the identification data.