Before Vampire Knight, my first encounter with Matsuri Hino's work was the series MeruPuri (Marchen Prince) which I initially read in scanlations (fan translated scans).
The manga revolves around a teenage girl named Airi who has her life turned upside down by the arrival of a young prince from a magical land. Aram, the prince, is just a boy but, of course, there's a twist. Whenever he's in darkness, Aram gets older and becomes a teenager thanks to a spell cast on him by his half-brother.
The plot may sound silly but unlike Vampire Knight, MeruPuri is a comedy so it's supposed to be silly.
If you're interested in checking it out, the entire series (4 volumes) is available from Viz.
Here's some more art from the series:
