I read this series a long long time ago, much before Vampire Knight.
The story develops very well, even with just 4 volumes. The art is clean and gorgeous.
In fact, Matsuri Hino is very talented as a mangaka; the plot, the dialogue, the artwork, everything fits perfectly.
So the reason I give it 10 is not because I'm a Vampire Knight fan.
Matsuri Hino-sensei had specified that she wanted to write more about a twist about Nakaoji, but no space was left. **what a sad thing 🙁
If you're like me who likes cute/sweet/romantic comedy manga (especially cute, sweet, fantasy, and romantic), then you'll really like it.
But if you're not into this type, then you wouldn't even care to read it.
This story is very different from Vampire Knight. Anyway, just because you don't like vampire story or 'Twilight', it doesn't mean should go against Hino Matsuri's manga or Vampire Knight. All her works are great.
By the way, in the story where the age difference between Airi and Aram is specified:
Aram became 17.
Airi said: "I'm 20 cough years old, is that all right?"
REASONING: it's not because she's 20! She is 20cough -->
the "cough" has omitted the last number --> age: 20 something --> age: 2x
So, the age difference is not 3.