The Tower Princess

King Underlie roared in outrage at the scene of the pixie-bitch bleeding profusely, but not dying. Underlie yelled out in protest at the girl getting up and wiping off the blood from her face.
Lianniea stood confident and proud, knowing she could not die empowering her, but distracting her foe.
“Why must you live? Can you not die, but for you to not die would be impossible. I am death! Only I cannot die!” Underlie cried out, his arm beginning to repair itself and grow back. Lianniea smiled and locked eyes with Underlie. The corner of her mouth began dribbling blood, and she coughed, spraying crimson, before speaking the truth.
“You, you are death—and darkness. In order for there to be balance, there must be light. I am life—and light. In order for me to die, you must die as well. But you cannot die, because you are death. This will be an ongoing battle of defeat and victory. I advise you, King Underlie that light always triumphs over darkness.” Lianniea said once more before she raised her sword and swung down—