A vibrant portrait captures a striking close-up of a female demon, her skin a deep azure with an ethereal sheen, embodying the mystical essence of a blue tiefling. She exudes an enigmatic allure, her face a perfect blend of otherworldly beauty and devilish charm. Her large, elegantly spiraled oni horns extend gracefully from her brow, their texture reminiscent of ancient, twisted roots. Silvery patterns trace intricate designs across her cheeks, shimmering like distant galaxies, hinting at her cosmic origins. Her eyes glow with an intense, otherworldly light, framed by midnight-hued hair cascading like a waterfall. Painted in a style reminiscent of Arcane, her facial features combine sharp, angular lines with soft, painterly strokes, creating a mesmerizing contrast. Her expression is both mischievous and wise, inviting yet intimidating, embodying the essence of a demon anime girl from another realm. The portrait is suffused with a mystical aura, evoking the rich lore of Dungeons & Dragons, capturing the imagination with its lush details and captivating design.