The arrival of the real Corin means that Shasta must give up his false identity and continue on his journey. During his time with the Narnians, Shasta has learned that he doesn’t have to be a humble fisherman’s son—that under the right circumstances, he can pass as a prince. Shasta’s brief time as Corin illustrates to him what freedom in Narnia feels like, and it provides motivation for him to try to seek a more permanent version of this freedom for himself.