I remember watching this movie some time ago... I enjoyed it a lot, even though I didn't get everything because there was no subtitles (I need to check out this YouTube video!)
I liked the atmosphere of the movie, it was both scary and touching (don't want to spoil anything but I could barely stand watching the scene with *fire*).
One scene really moved me though: the one where Sugizo is like rooted in the ground and start moving like a flower or something... really beautiful.
And of course the soundtrack was amazing. I could listen to the ending theme for hours.