A comic book cover illustration featuring a full body shot of a white-haired nun with an air of mystery, casually smoking, her knees drawn up in a relaxed yet defiant posture. The background is moody and dark, enhancing the drama of the scene, and the perspective is captured from above to emphasize her indifference. Her expression is one of detached coolness, exuding a sense of both allure and strength. Her flowing white hair blends seamlessly with her traditional habit, contrasted by her bold, confident pose. The style is highly detailed, creating an epic visual impact that's both striking and memorable.