Gankutsuou

From Clamp no Lumiere:
Albert de Morcerf, 15 years old doesn't know what's the right future for him... in other words he's your average teenager. Despite his money and the glorious name he's caring (he's the son of a famous general) he feel a bit lost. Between Eugenie, his fiancee, he's not sure to love and Franz, his over protecting best friend, he's living a carefree existence...
But everything is about to change when Albert crosses the path of the Count of Monte Cristo, a mysterious gentleman, rich beyond anyone else dream.
Who is that man ? and why does he seem to know everybody's darkest secrets.