Untitled AI art by @practical-desert5

Create a book cover for a novel titled “Echoes” by R.K. Rosenberg. The image is a vertically split portrait of two characters. On the left is Astrid: a young woman (early 20s) with blonde hair, blue eyes, light skin, and a soft expression. Her hair should blend naturally into the center without a visible parting. On the right is Cassian: a man with darker hair, brown eyes, and slightly darker skin. He has a brooding expression, and the outer half of his face dissolves into softly glowing digital pixels that match his skin tone. The pixels should appear as though his face is breaking apart into them, starting around where his ear would be. The illustration should be semi-realistic—digital painting style, not photorealistic. Background is dark electric blue with subtle digital texture. Title “Echoes” appears at the top in a sci-fi font; author name “R.K. Rosenberg” at the bottom in a complementary, minimal style.