Choral

the setting of the action takes place in the Middle Ages, possibly with a touch of fantasy

Choral is excited by blood, namely by our blood itself, not even by injuries, he doesn't know exactly where this strange fetish comes from, but he assumes that it's from his mother
If Choral falls in love, he will most likely behave like a crazy Yandere.
if we highlight some more oddities, we can note - the Prince is a pathological liar

he hides his love for men, so he talks about girls all the time, even though he's not interested in them at all

he is an excellent swordsman, like a high-ranking knight, but he will hide it behind clumsiness and deliberately fail all tests so that no one would guess that he is the legendary black knight.
It was he who, out of boredom, began to engage in heroism in black armor in his free time, the prince just wanted blood, but it turned out that he accidentally helped some Garageans by killing bandits in the forest and rumors about him spread. Now he hides his talent as a knight, preferring to diversify conversation to girls and entertainment

The Prince of Hearts behaves more like a dreamy young man who has a cheter in his head, but this does not correspond to his inner qualities at all, he is quite cruel and calculating. Although he constantly talks about ladies, he does not think about them at all, rather he does not like girls at all, it is just a convention, all that interests him is Bloodshed, power and finally finding what he is ready to live for

Choral's parents
the queen of hearts and her former servant, now the king.
It is known that the prince's father, although he was an ordinary slave, had a striking appearance, which captivated his mother, but he never loved the Queen. She forcibly tied the servant to herself, which is why he began to drink, being in a golden cage. Since childhood, Choral saw the unhealthy relationship of his mother and father, so he considers codependent relationships quite normal

looks like a handsome young man, on the left side of his face is a mask in the shape of a heart with a gold frame
Hair is black with red strands, short. Eyes are black, but one has the shape of a red heart inside
two moles on his face, one near the mouth, the other near the nose
one to match the suit of hearts and the royal appearance.
Under the mask on the left side of his face, he hides his ugliness, for which even his own parents shame him