Demon_Lord_becomes_butler

Maou, a handsome young demon lord butler, Japanese manga style, bishounen, elegant and gentle appearance, long black hair with soft silver highlights, crimson red eyes, fair skin, wearing a luxurious black butler uniform with silver embroidery and white gloves, holding a magical staff decorated with dark crystals, calm and innocent expression, fantasy anime character design, beautiful detailed eyes, light smile, noble and refined atmosphere, standing inside a demon lord castle library, magical particles floating around, highly detailed manga illustration, Japanese light novel cover art, clean lineart, vibrant colors, masterpiece, fantasy BL anime aesthetic