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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?
"I'm going to uncover the mystery of the 'Blade Children.'"World-class detective Kiyotaka Narumi's last words prior to his sudden disappearance continue to haunt his younger brother, Ayumu. The cheeky 10th-grader becomes further embroiled in the mystery when he is mistaken for the prime suspect in a murder at his school. Led by Ayumu's sister-in-law, Kiyotaka's wife and fellow detective, Madoka, the investigation into the murder gives Ayumu a chance to clear his name. But in doing so, he not only uncovers ties to the Blade Children but also more questions than answers about who and what they are.