"In the central plaza of a futuristic neon city, a colossal mysterious obsidian

"In the central plaza of a futuristic neon city, a colossal mysterious obsidian box with a mirror-polished surface suddenly appears. Its exterior is engraved with flowing holographic lines in emerald green and magenta, reflecting off surrounding skyscrapers in a cyberpunk shimmer. Onlookers fix their gaze, while security drones hover nearby, flashing red warning lights. In the distance, trails of neon and steam merge, capturing the city’s cacophony against the box’s alien stillness. A slightly aerial perspective frames the glowing nightscape and the box, heightening the cool sci-fi atmosphere."