If you loved Princess Arete, try xxxHOLiC The Movie: A Midsummer Night's Dream
A bridge between a film you've already seen and one most people haven't. Here's what they share, and what the second one does that the first one doesn't.
What they share
Theysit in Animation / Fantasy / Mystery territory. If that's the register that drew you to Princess Arete, the second film will land in a comparable space — through a different lens.
What xxxHOLiC The Movie: A Midsummer Night's Dream is
Mansion gates. Summer dusk. Wind chimes. Yūko, Watanuki, and Domeki arrive at a collector's gathering, soon stalked by eerie disappearances. Each guest harbors a hidden desire, and the house itself seems to anticipate their doom. Early work from Production I.G offers elegant chills.

