A highly detailed anime-style light novel cover illustration. In the foreground, a beautiful young woman with long silver hair and large blue eyes wears an intricate white lace dress and a silver floral tiara with white roses, reaching her hand forward with a gentle, longing smile. Behind her, a young man with black hair wearing an ornate black coat with red accents and silver chains stands facing away, looking back over his shoulder melancholically. They are on a balcony overlooking a gothic fantasy castle city at dusk, with white petals scattering in the wind. The image features prominent, elegant Japanese typography. The large main title reads "善人をやめた悪役貴公子は、白薔薇の聖女を遠ざける" in stylized fonts with gold and blue gradients. A vertical catchphrase on the left reads "世界を守るため、俺はもっと悪になる。" and another on the right reads "世界を敵に回しても、あなたの隣にいたい。". Additional text at the bottom includes author credits and a publisher logo. The overall mood is dramatic and romantic with dynamic lighting.

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