Of course they could only ever be for each other.
Quite literally cut from the same cloth, or artwork, for that matter
The same hands, the same mind.
They shared the perfect number of similarities and differences.
They were made to be together. To fit together like puzzle pieces.
The living gemini. They were created as complimentary colors.
Dark was charming, high spirited, brave and reckless.
Krad was calm, intelligent, quiet and generally content.
They both shared pride and arrogance, which got them both in trouble time and time again.
Of course, their creator never meant for them to become the murders and thieves they turned out to be.
When Hitomu Hikari started working on the Black Wings, he was simply lonely.
He had no family, children or even friends to surround himself with.
So, he used the one thing he did have, a gift passed down from his ancestors, the gift of art.
He poured all of those feelings into creating meaningful and powerful companions for himself.
As they came into existence, he decided he wanted to make them both his children...and his lovers.
Hitomu was lonely, yes, but there was obviously something deeper than that.
Something that drove others away from him.
He wasn't right. He was manipulative, cruel, stubborn, and got bored of other people much too easily.
In that boredom, he had to make some fun for himself.
In the months following the creation of the black wings, they were treated as children.
Hitomu taught them the basics of existence, how to function in the world, but also, he taught them how to access their magick.
When they weren't busy with lessons, the boys of the black wings were left to their own devices.
Krad painted, and read practically every book that Hikari owned.
Dark trained, lifting weights and going on runs to keep his physical body well.
Also, they got to know each other.
They could of been siblings, but they were a bit too close for that.
They were, after all, two halves of the same whole.
Dark and Krad were best friends. Learning about the world, likes and dislikes, and emotion and sensation, together.
It was curiosity and need that turned the relationship into something more.
Trying out the feeling of lips, skin, heat upon each other.
Once they had began, they would never go back.
They were always touching, whether they were sitting close together, holding hands, or naked in a grassy clearing far away from their creator.
For many years, Dark and Krad were happy, spending their days laughing together and learning about things that were beyond a mere human's comprehension.
They were powerful, they were unstoppable.
Of course, the paradise didn't last.
Hitomu's mental health took a turn for the worse as he began to get jealous of his creation's relationship.
He now had a target to blame for his loneliness.
Dark.
Krad had always been the most well behaved, and Hikari's favorite, so naturally, it had to be all Dark's fault that the blonde had been paying less and less attention to his creator.
First, he separated them.
Giving them separate lessons, and locking their rooms at night so they couldn't sneak out and meet.
He sent Dark on errands outside the home, shopping, trading and the like.
Krad was not so fortunate.
Hitomu used the golden angel as his one source of entertainment.
The more he fought back, the worse it became for him.
Tortured, beaten, enslaved, raped, nearly killed…
and Dark had no idea.
Hitomu manipulated Krad into thinking that his black angel had abandoned him, and in his violated, terrified, desperate state of mind, he turned his thirst for revenge, and his rage, towards his lover.
Finally, when the creator grew tired of both of the boys, he sealed Dark into the first born son of his rival family, The Niwa's, as a sort of payback for all the Hikari artwork they had stolen.
He sealed Krad into his brother's first born son, thinking that maybe that would create some interesting situation one day.
Shortly after, lost in the empty desert of his consciousness, Hitomu Hikari committed suicide.