UHD, 164k, exquisitely detailed portrait, anime demon middle-aged man in a dark robe, full body view, artistic masterpiece, intricately detailed masculine features, complete body depiction, flawless physique, perfect anatomy, beautifully crafted face, flowing white hair, striking red eyes, alabaster skin, standing in an infernal backdrop surrounded by flames, illustration, hyperrealistic, modified focus, avoiding low quality, avoiding duplicates, enhanced clarity, maintaining accurate proportions, avoiding deformation, ensuring anatomical accuracy, avoiding blurriness, avoiding incompleteness, focused representation, cohesive anatomy, unified facial structure, avoiding excessive features, consistent limb depiction, harmonious composition.