I'm Not the Greatest Knight

My name is Roland, I am a knight, when you read my story. I should still be a great knight. At least, that's what I claim. Justice, light, and the ambition to defeat the evil dragon in the world. Shattered armor and a wild boar were my only items of clothing, and a witch sang small poems to me. But this world has long been broken, as if the sky has been torn apart by something. And I gradually realized that I was not a knight under the armor! ——I am filthy, I am vicious, I am extremely cruel. No need to say much. The final divine battle is coming! Come, let me, an unworthy pawn, challenge you—the final verdict!