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Meet the cute, smug, cane-wielding 17-year old Iwanaga Kotoko as she (very) aggresively tries to woo the older Sakuragawa Kurou and act as a mediator/problem-solver for the supernatural world. From the author of Zetsuen no Tempest and Spiral! Both touched by spirits called yokai, Kotoko and Kuro have gained unique superhuman powers. But to gain her powers Kotoko has given up an eye and a leg, and Kuro’s personal life is in shambles. So when Kotoko suggests they team up to deal with renegades from the spirit world, Kuro doesn’t have many other choices, but Kotoko might just have a few ulterior motives …
One day, a princess was stuffed into a barrel and washed ashore an island. One day, a young girl was unexpectedly killed, the culprit yet unidentified. Thus, one day, a battle wrapped in revenge and magic that transcends time and space had begun.
Thousands of years ago, Vampire King Akabara "Red Rose" Strauss lost both his kingdom and his queen. Since humans were unable to kill the queen, they sealed her away, erecting thousands of fake seals so that the king would never find her true location. Despite being pursued by relentless dhampires, Akabara continues to search for his queen to this day… Akabara's quest takes a sinister turn when an entity called the Black Swan appears. The Black Swan inhabits the body of a young human girl every 50 years, giving her the power to destroy the Vampire King and his queen. With each incarnation the Black Swan grows stronger--will the 49th Black Swan mean the end of Akabara?