Sogo Aoyagi is a childhood friend of Jins who grew up at the Aoyagi Shrine. He currently lives in the Mikasa Shrine in Tokyo while he studies at college. They have known each other since they were young due to the fact that their fathers are also good friends. Sogo can often come off as selfcentred and is usually shown as this in a number of situations but he is also cowardly especially when himself and Jin talk about Kogane when they first meet her. He attempts to lure Kogane into his grasp with a number of ploys which include attempting to get her drunk but these often backfire on him.