A cinematic anime film still from the Chainsaw Man anime by studio MAPPA, rendered as clean cel-shaded anime illustration, depicting a towering, labyrinthine urban canyon under a massive blood-red moon with swirling crimson clouds, where jagged skyscrapers of red and teal steel frame a narrow alleyway teeming with glowing purple jellyfish-like creatures drifting through the air and water below, the scene illuminated by stark contrast between the fiery reds of the sky and buildings against deep black voids, with visible structural beams and rusted metal frameworks stretching across the foreground, all rendered in bold, high-contrast linework with saturated neon hues and dynamic perspective emphasizing depth and mystery, capturing the eerie, post-apocalyptic atmosphere of a city submerged in aquatic life beneath its own skyline.