Idalia de Medici, an angel of righteousness and justice, has discovered horrifying secrets that the superior Angels had kept hidden for eons. She seeks for answers, and in order to do so, she must stray away from the path of Elysia and her beliefs. Along with her is Deimos, a demon sent to Elysia on a mission and had unfortunately stumbled with Idalia. Together, they unravel the secrets of the two worlds, only to discover how the chains of their hearts react to one another. Two can love in secret, but with much prying eyes, it is almost impossible, especially when the foul stench of their sin lingers just right below Zakiel, Idalia's childhood friend who bears the pain of loving her in secrecy. What happens when an angel, made to kill demons, falls in love with one? Who interferes for the sake of their heart's determination?

What truth lies behind the throne of Aurelia? Emi Ainu, tied by the promise of her Grandfather and the previous Emperor, marries Tenji Youzei and becomes the reigning Empress of the prestigious land. However, a night later and she begins to discover the horrific secrets of being married to the throne. At her vulnerable state, Sujin Seimu approaches with an unexpected offer in his hand. Will she accept the temptation even if it meant betraying her own country Or will she continue to wash her people with her own blood?