A devout Sister of Battle stands in front of a stunning stained glass window, her battle armor reflecting the intricate sci-fi design inspired by Warhammer 40k. Her face is detailed and symmetrical, with reflective eyes, dark eyebrows, and subtle makeup enhancing her striking features. She is surrounded by marble walls, with dust particles visible in the detailed lighting that creates a dramatic chiaroscuro effect from above. This scene is reminiscent of a professional majestic impressionism oil painting, drawing influence from artists like Waterhouse and John Constable. The composition is intricate and high in detail, capturing the essence of medieval and futuristic armor. The lighting is dramatic, with elements of rim lighting adding depth, inspired by the artistic styles of Jeremy Mann and Greg Manchess. This work is a trending masterpiece on ArtStation and CGSociety, blending the imaginative storytelling of Studio Ghibli and the visual precision of Makoto Shinkai.