1. A portable electronic device, comprising: a display unit; a storage unit that stores any one of end regions of the display unit and a character input application in association with each other; and a control unit, wherein, in a state where a character or an image is displayed on the display unit, when any one of the character or the image is selected, and an instruction is thereafter executed to move the character or the image to the end region, the control unit activates the character input application stored in association with the end region, and inputs the character or the image thus selected, into the character input application.