- Lumi City is a fictional city created for a video game or story setting. It is known for its vibrant and futuristic atmosphere, characterized by its dazzling neon lights and advanced technology. Lumi City is often depicted as a bustling metropolis, with towering skyscrapers and crowded streets. The city is alive day and night, as its residents and visitors enjoy the city's various entertainment venues, restaurants, and shops. Lumi City may also be home to cutting-edge research and development facilities, high-tech industries, and a thriving economy. Overall, it is a visually stunning and exciting location that captures the imagination of those who encounter it.