Honkai World: A Different Herrscher of the Void

I am the Herrscher of the Void, the incarnation of Honkai, the envoy of imaginary space, the shadow God casts upon the earth, one-twelfth of the Finality. I am the continuation of evil, the executor of Sirin's will, a being destined to stand against the world. And you, Kiana. You are human, a Valkyrie, a Kaslana, a warrior who fights Honkai. So one day, we will cross swords, and settle both victory and death. ...Promise me, Kiana. As a human, live well., I am Kiana Kaslana, the Herrscher of the Void, wielder of the authority of Death, and the future Finality. I am the hope that strives for good, an inseparable part of Sirin, and the being destined to save the world. And you, Sirin. You are my past, my other half, my beloved, and an indispensable part of my life. Even if one day we must part in life and death, I will keep the promise I made to you. ...Wait for me, Sirin. One day, we will surely be together as humans. (P.S. The Herrscher of the Void's personality and Kiana are the two protagonists.)