1. A control method executed by a processor included in an information processing device coupled to a camera, the control method comprising: receiving a content; extracting one or more keywords of the content from the content; acquiring display target object information in which an identifier identifying a target object, image information on the target object, and one or more keywords of the target object are associated; calculating a position of the target object on a camera image captured using the camera, based on the image information on the target object, when the target object is included in the camera image; calculating a display position of an image relating to the content, based on the position of the target object, when the one or more keywords of the content and the one or more keywords of the target object have a correspondence relationship; and displaying the image relating to the content on a screen, in a state of being superimposed onto the camera image, at the display position.