character: frederica_bernkastel. A petite girl stands centered in a moonlit gothic castle hallway in a medium shot, presented in a front view with perfect posture. The girl has pale porcelain skin, waist-length straight steel-blue hair with blunt bangs and side locks framing her face, and deep violet half-lidded eyes gazing calmly. She wears an elegant Gothic Lolita black long-sleeved dress featuring long sleeves with white cuffs, a fitted bodice, a large royal-blue ribbon beneath the collar, a layered knee-length skirt with white ruffled petticoat, white knee-high socks, and black Mary Jane shoes, as well as a black cat tail tied with a small blue ribbon near the tip. Her hands are folded neatly in front of her waist, her expression serene and slightly melancholic. The background shows a dark ancient gothic castle interior with tall stained-glass windows, dimly illuminated by cold blue moonlight filtering in. Crystallized blue fragments and shimmering magical particles float gently around her, while dramatic shadows accent the polished stone architecture and sculptural details. The lighting is volumetric and soft with high clarity, emphasizing the intricate folds of her dress and sharp line art in a fine anime illustration style.