Shin Mizuki, a boy unable to feel emotions or sensations, decides to take his own life. In his final moment, he meets an ethereal woman who grants him a new name, Ildna Bloodarch, and one of her Unique Bloods. She turns him into a vampire, her seventh bloodline, promising that in his next life he will finally experience emotions.

Now, as Ildna Bloodarch, one of the seven purebloods born from the first progenitor, he must learn what it truly means to feel, and rule over his domain as one of the four Domain Lords. Power, responsibility, and intrigue collide as Ildna’s journey to understand emotions, and his kind begins.