A full-body depiction of a devoted Sister of Battle stands resolutely in front of an elaborate stained glass window, her armor exquisitely adorned in a sci-fi nun style reminiscent of Warhammer 40k. Her face is symmetrical and detailed, with intense reflective eyes framed by dark eyebrows and subtle makeup accentuating her features. The setting is bathed in a dramatic chiaroscuro contrast, with intricate marble walls and dust particles shimmering in the air. Lighting is detailed and includes rim and dramatic effects, casting a professional and majestic impressionistic ambiance akin to the works of Waterhouse, John Constable, and other renowned artists. The scene channels the aesthetic of Studio Ghibli and notable names like Jeremy Mann and Greg Manchess, with elements trending on platforms like ArtStation and CGSociety. This high-detail, intricate portrait embodies a rich blend of influences, evoking the emotional resonance of Makoto Shinkai's Kyoto with a sci-fi twist.