An image projection device (1) according to the present invention comprises: a subject extraction unit (11) that extracts a plurality of subjects from a captured image; a subject position grasping unit (12) that grasps the positions of the subjects; a subject projection destination determination unit (13) that, on the basis of the positions of the subjects, determines the projection destinations of the subjects; and a plurality of virtual image display units (14) that display virtual images of the subjects in accordance with the determination made by the subject projection destination determination unit (13).