Godchild is the "sequal" or continuation to the Earl Cain Saga. While the drawing-style is very different, the main story is of course, the same. If you picked up Godchild, I most definatly reccomend you check out how it all began. And if you loved the Cain Saga, be sure to find out the ending in Godchild!
The beautiful and egotistical Prince Ludwig is a shameless player who will pursue any woman with a hot body, a cute face, and enormous breasts. But what he really loves is the pale serenity of a beautiful corpse, a preference reflected by the countless dead babes that decorate his bedroom. This hobby repulses the king, who exiles his son until he can find a bride who's actually alive. In his quest to woo a suitable princess, the haughty youth will face many obstacles, including a cursed hand puppet that turns its wearer into a frog, an assassin with a hood stained red with blood, and worst of all: fake breasts.
Another manga by Kaori Yuki about a very pretty young man who wanders around and encounters various mysteries. Both draw a lot of inspiration from European fairy tales and nursery rhymes, and most of the mysteries involve murder, incest, or something similarly gloomy.