rialtoscuro
Rialtoscuro n. disorientation when you step outside a movie theater into unexpected darkness, a twinge of jet lag from two hours of escapist fun which only diverts you from making the sequel to your youth - an old cult classic with wild shifts in tone, dropped subplots, major characters that appear out of nowhere only to vanish without explanation, and an ambiguous ending - but this time, it's personal.
From 'The Dictionary of Obscure Sorrows', which contains some spot-on coinages among its baroquely savvy wordplay.