Once Upon a Time (A Fairy-Tale Love Story) (слэш)

In a universe with no Federation, where First Contact never happened, Jim Kirk is your average popular guy. On Christmas Eve, thanks to a series of strange events, Jim finds himself in a parallel universe where the Milky Way is under the control of an alien race and ends up as a servant in the residence of the Royal House of Vulcan. As he starts adapting to his new life, Jim's curiosity fucks everything up—but hey, Vulcans shouldn't have told him that he isn't allowed to enter this wing of the palace; Jim has never been good at following rules.
Or,
This is the story of how Jim Kirk became a Princess ("Prince Consort, Bones!") of the United Planets of Vulcan Kingdom.