A robot causes an image capturing device to capture an image of a container in which a plurality of targets are placed to overlap in part with one another, the plurality of targets including components whose types are different from each other among the component and a component kit in which two or more of the components are assembled with one another, detects types, positions and poses of the plurality of targets based on the captured image captured by the image capturing device, determines a priority order of one or more of component kits being assembled using the targets placed in the container according to the detected types, the detected positions and the detected poses, and assembles the component kit selected based on the determined priority order.