A cinematic, wide-angle low-angle shot captures a high-stakes battle atop ancient ruins during a violent thunderstorm, featuring a petite girl leaping through the air. The girl, with flowing, waist-length silver hair and determined sapphire blue eyes, wears a yellow cardigan over a white sailor uniform with a blue collar, a blue ribbon, and a dark blue pleated skirt and high socks; her clothing and hair billow violently from the wind pressure of her attack. She powerfully grips the hilt of an impossibly massive, thick black iron greatsword, swinging it in a dynamic, twisting arc that creates an overwhelming sense of centrifugal force. The colossal sword, featuring intricate ancient runes and a silver edge, dominates the foreground with extreme foreshortening, slicing through a gargantuan obsidian-scaled black dragon. A massive, glowing bluish-white crescent-shaped energy slash erupts from the blade, accompanied by lightning and shockwaves that shatter the surrounding stone pillars and debris. The atmosphere is dramatic and oppressive, with a dark blue-grey stormy sky illuminated by flashes of lightning and intense blue magical rim light.