Untitled AI art by @practical-desert5

Create a book cover for “Echoes” by R.K. Rosenberg. The main image is a single face split vertically down the middle to show two characters. The left half is Astrid: a young woman (early 20s) with blonde hair, blue eyes, light skin, and a soft, innocent expression. Her hair should blend naturally into the center with no visible part. The right half is Cassian: a man with brown eyes, dark hair, and slightly darker skin. He has a brooding look. His face dissolves from solid at the center to glowing, skin-toned digital pixels that break off around where his ear would be. No ear is visible—only pixels drifting away and spreading apart. Style should be semi-realistic, like digital concept art. The background is dark electric blue with subtle digital flair. The title “Echoes” appears at the top in a sleek sci-fi font, and the author name “R.K. Rosenberg” is at the bottom in a clean, minimal style.