Twins, separated at birth.
One, a full-blooded human, with light brown hair, pale skin, and eyes a light green-blue.
The other, a full-blooded demon, with ombre black-to-blue hair with crimson eyes and tanned skin, as well as black claws, small ebony horns from his forehead, and a whiplike black tail with a sapphire blue fluff on the end that seemed to dance like fire.
One, raised to be an exorcist, now in his first year at King's Cross Academy at the young age of thirteen, with a loving adoptive father and five uncles. Or, he did. At age 11, he arrived a minute too late to save his monastery from going up in strange blue flames, only managing to make it in time for his father to give him the cross the priest always wore around his neck.
The other, raised as the ninth Demon Prince and thus ninth in line to Lord Satan's throne. He has risen to be the fifth most powerful demon excluding Satan himself, and is rather cruel to those he believes to be lesser than him or his brothers. Though considered a 'bastard child', he is widely respected and feared, and even his older brothers rarely cross the line between playful banter and a fight, the rare exceptions being Mephisto and Amaimon. Those are also the only two seen joking with the Prince, besides a demon cat named Kuro who he regularly 'play-fights' with. He is also known to be quite respectful to others, unless they threaten him or cross his beliefs. (Basically, don't get on his bad side, he'll brutally murder you and all you hold dear)
One, named Yukio Okumura.
The other, Rin.
