Aoihoshi is the center of modernity and captialism, yet there exists a 'legend' that does not seem to resonate well with its enduring image. Deep at the heart of Aoihoshi lie the indegenious inhabitants of the land, where the humankind eventually sent them to eternal banishment and damnity. The forefathers of the land may have perished, but legend says that their offsprings remain and would eventually return to power when the planets align centuries after. This legend is buried in the hearts of the older generations and forgotten, until one day, their offsprings come out from hiding and begin their horrific hauntings of the lives of their perpetrators.

In the year 2014, more than a thousand lives were reported missing, and a comparative number of several hundreds died with a chilling cause of death - loss of blood, or rather there was not a drop of blood left in their cold, icy bodies. The petrified expression of the deceased reveals the unimaginable fear during their last moment of their lives. With their eyes wide open, fist clenched, body stiffened, each deceased shudders the people and leaves a deadly warning to the remaining - The vampires have returned, much stronger, deadly and brutal.

Researchers have since dug deeper into the origins of the underworld and their findings, though inconclusive, were insightful and mindblowing...

The vampires feed on the blood of the living, though not every type of blood are to the liking of their predators. The sweetest and most difficult to find are those of the pure hearted, a drop of theirs would rejuvenate the soul of the vampire and gives it an energy booster.

If the humankind is killed before their blood are consumed, they remain dead. However if their blood are consumed alive, the humankind will suffer excruciating pain and lose their sanity while their internal organs undergo transformation, gradually morphing them into that of their predators.

Male predators are highly seductive, using their sensual attraction to lure their female preys. Though they are irresistible and manipulative, they are also very committed with their chosen other half.

Like all bureaucratic establishments, there are several classes of vampires, with the governers being the aristocrats, the Amakusa House who have been ruling the vampires for as long as they exist.

Of course, as in every democracy, there's resistance and defiance. In the vampire world, the Amakusa has always faced problems from the 'Dark Revolts', who claimed to be the descendants of the elder vampires. Though not as strong as the Amakusa, the 'Dark Revolts' are offensive, merciless, cunning and swift in their attacks. They'll do everything within their means to rebel against the Amakusa. It is said that if bitten by the 'Dark Revolts', the venom will enter the blood stream and poison its prey such that the transformed victim becomes as vicious as his/her predator.

In the early 20th century, the Vampire King was mysteriously assasinated. Though it was clear that the 'Dark Revolts'  has a starring role in the murder of the King, there were no evidences to put them to justice. Fortunately, the Amakusa house was unshaken by the loss of the almighty King, hence continued to suppress the subversion of the 'Dark Revolts'. However, as the years go by, their thirst for power grew and their objective were to crush the Amakusa reign by disrupting the crown prince, the legitimate successor from taking over the throne. 

It is believed that the crown prince could only receive the throne when he finds his Queen, his one true love who shares the affinity with him. The chosen female human has to first offer herself as a tribute to the Vampire world as a way to seek the forgiveness to the sins committed by her kind, through a ritual that cleanses her soul is the most torturous way.