I love this manga!! It's called Dark Rose Alice
Dimitry was a young actor following his dreams, he went to a 15 birthday of a girl he fell in love with. But it was forbidden love, she was going to marry another guy. One day Dimitry was run over by a carriage, they send him to the nearest hospital, the doctor said he was dead but he revived. Turns out he was a vampire.

Sorry I can't say more than this it will be a spoiler.
Ya interested you may have to read the manga. (^～^)