i've watched aoyamas latest movie 'sad vacation' just a few days ago. i was well aware that he intended it as a sequel to 'yûreka', but what i didn't know is that he refers much more to this one here than to his y2k masterpiece (at least as far as asano tadanobu and the main plot is concerned). so if you plan to see his new one, make sure you've seen his very first.