1. A server system comprising: a reception section that receives captured image information and metadata from a terminal device connected to the server system through a network, the captured image information being information about a captured image captured using the terminal device, and the metadata being added to the captured image; an insertion image selection section that selects an insertion image based on the received metadata, the insertion image being an image differing from the received to captured image; and an image set generation section that generates image set information in which the insertion image is inserted into the captured image information.