My secret obsession/guilty pleasure is this anime series and manga:
It's about a shy, nerdy girl who lives in a women-only boarding house in Tokyo with five other social misfits. One day she befriends a beautiful "princess" who quickly charms her way into their "nunnery." The hitch? The princess is actually a guy in drag.
Here's the direct link; couldn't get the embedded one to work:
https://m.youtube.com/watch?v=qc0rPdcyaUo