We all know of Yui being the new sacrificial bride , her blood sweeter than anything a vampire could taste, but does anyone know of Yui's sister, Akira? She is the darkness to her Sister's sun. Protecting her from the shadows, but what will happen to both of these sisters once they get thrown into the Vampire's lair? Akira is not normal, nor is she human, but, will she discover what her past is? What she is? And along the path, she will fall in love so deeply she will feel like she is drowning. Akira is not a normal girl. But it's never the case anyway.