A forbidden secret, known only by Heaven herself and the Black Swan.
Stella's unborn child and she were killed, murdered without mercy. No one knew that this was the beginning to the whole cycle. Another child used for the beginning of the curse, but as the Black Swan flew to another child; Stella's spirit was residing in that particular child's body.
And so the cycle continued, the Black Swan inhabiting a host with Stella's appearance and spirit; until the 50th host. She was the strongest one amongst the whole batch and she sought to understand Rosered Strauss, Akabara, the vampire king. He only knew that this girl looked like Yuki, the 49th host; but they were actually all the same.
It was the Black Swan was actually a curse on Stella's spirit and not a random choice. The catalyst [it means reason] of the Black Swan actually rose from Stella and her unborn child's death. Since the curse was to be continued, the Black Swan fed off its host's physical condition and when the spirit of that host was reincarnated, the Black Swan would follow it to wherever it went to. You can run, but you can't hide. Kayuki had said that before and it applied to herself too.
However, in the 50th host's fate, Fate decided that there would be a twist of events. Getting her to be born into a family with a influential grandfather who doted on her, making aliens invade their world, the Black Swan curse and finally, Stella's feelings for Strauss. The situation was complicated and it was tangled up in knots that had to be deciphered from 1000 years ago.
It was ironic, considering the feelings of Stella and Strauss. A dead wife's spirit being controlled by Fate to kill her husband or lover through the continuous generations of the Black Swan curse, the curse was never bond to Stella herself, so no one knew about Stella except for the 50th generation, Kayuki, who had gotten too close to Akabara for her own good and ended up falling in love with him. Stella's feelings were aroused by the similar man, but were locked away outside the mind of all the 50 hosts.
The 49th host could have fallen in love with the man had she the time to know him better, Stella's feelings were shaken when she decided that she couldn't hate him and quite much liked him. The same destiny spinning around the same girl, never endingly trying to get her to get close to Strauss, and in the end… what? Get her to kill him? The unanswered question, and the most confusing one; what actually happened?
The endless fate of Stella's spirit, Kayuki's as well now, warped into a shadow by the Black Swan… when will anyone notice? Their souls calling out for the same man that might destroy them… Forever bound by the suffocating cycle of hate, fear, love and pain.
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Kayuki sat on the bed as she rubbed her head, with an empty expression she looked outside despite her feelings warring inside. When will this ever end? No one could ever bring her—their souls back to justice anymore, it wasn't like no one cared. But no one knew and even if they did, they would just add on to her burden; just like the vampire king was doing now.
There was one thing she knew: her soul and the others were already lost in the dark curse of the Black Swan, never to be bought back by anyone. If everyone went to Heaven, they wouldn't see the 50 hosts of the Black Swan and Stella there—after all, they were all the same person.