A captivating close-up portrait of a woman with elaborate, curling horns and an ethereal demon visage. Her skin is a celestial shade of cobalt, capturing the essence of a blue tiefling. Her eyes glimmer with an otherworldly allure, set against the backdrop of a cosmic panorama reminiscent of Dungeons & Dragons lore. Her visage melds the fierce elegance of a demon girl, with delicate oni-like horns crowning her lush, midnight hair. The scene is artfully rendered in a vivid, animation-inspired style akin to Arcane, highlighting the contrast of her celestial features with the mystique of a demon anime girl, illustrating the enigmatic charm of a female demon.