1. An image processing device comprising: a position information obtaining unit configured to obtain a position information of an object; a control unit configured to acquire action data for a proposed action to be performed in a real space, based on the position information of the object; and a superimposing unit configured to generate an output image by superimposing a direction for the proposed action at a position in a captured image determined based on the position of the object in the real space, wherein the action data defines a correspondence between the direction for the proposed action and the position of the object, wherein the action data further defines a correspondence between the direction for the proposed action and a progress condition of the object in the real space, and wherein the position information obtaining unit, the control unit, and the superimposing unit are each implemented via at least one processor.