Seems like I am a bit late to the party.
Anyway, I made an(other) encode of the OP, fresh from DVD source, of course.
H.264 video, with Vorbis q6.5 audio, softsubbed karaoke, a bit cleaned up and all that. ^_^;
(Suggestions for a more permanent host welcome.)
Now I just hope, that Ouvertüre will have something for Shinku fans too.