A beautiful, devout sister of battle stands resolute in front of a vibrant stained glass window, dressed in intricate sci-fi nun armor. Her face symmetrical and detailed, with reflective eyes and dark, bold eyebrows enhanced by mascara. The scene is set within grand marble walls, with dust particles dancing in the air under the detailed lighting. Dramatic chiaroscuro effects highlight the intensity of the moment. The perspective is from above, capturing a sense of majesty and power. This impression is akin to an oil painting by masters like Waterhouse, Constable, or modern artists akin to those trending on ArtStation and CGSociety. The depiction is intricate and high in detail, reminiscent of Warhammer 40k style, with influences from Studio Ghibli's magical touch and Makoto Shinkai's atmospheric depth. The steel and medieval armor reflects the light, enhancing the dramatic and professional air of the composition, while avoiding the pitfalls of poor anatomy or unrealistic features. The two characters within are depicted with precision, framed elegantly without veering into abstraction or errors.