Lost in Equestria

After an argument with his cousin, Jin Bo somehow transmigrated into the body of an ordinary pony in the land of ponies, "Kim." This was a completely unfamiliar world to him. The only possible way to return to his old world was to use Princess Celestia's magic mirror? The real reason Princess Luna was banished? A great disaster in Equestria? This is a story about being lost far from home.