I, Eliot, went to a magical world called Fillory, where, as a child of Earth, their gods decreed I would be their new High King.
Fifty years or so prior, my friends Quentin and Julia, using time travel magic, had gone to Fillory to obtain a magical blade capable of killing an shadeless insane magician with god-level power, but in order to get the blade they had to promise that whoever ended up High King in the future would give their family a seat at court, ie, marry whoever was eligible at the time. That ended up being Fen, who's here. You might meet her. She's very sweet.