Complex sentence: Tobi, disappointed with the answer, complains that she always gives him that answer but it never happens; wanting to see his parents again, Tobi escapes from the clinic naked, with his wings still attached to his back.
Split into simpler sentences: Tobi, disappointed with the answer, says that she always gives him that answer but it never happens. Tobi then decides to escape from the clinic naked, with his wings still attached to his back.