Create a high-quality anime-style digital illustration of an abandoned aquarium that has been reclaimed by the sea. The scene is a vast ruined aquarium hall, once a giant tank exhibition area. The floor is partially flooded, old benches and audience seats are submerged, rusty railings remain, and broken guide signs stand in the water. A huge cracked aquarium glass wall dominates the background, with beautiful fractures, reflections, and drifting particles. The atmosphere should feel quiet, melancholic, and beautiful. It is not a horror scene. It should feel like a forgotten place where the ocean has quietly returned after many years. A young boy stands small in the lower part of the scene, looking upward at the ruined aquarium. He is around early to mid teens, with dark hair, a simple white shirt, a short jacket, shorts, and sneakers. His design should be modest and natural, not flashy. His expression should mix wonder, loneliness, and quiet curiosity. He may carry a small bag or a small flashlight, but keep the equipment subtle. From a collapsed opening in the ceiling, soft bluish-white light pours into the hall like underwater dawn. In the light beams, schools of small fish swim silently. Glowing jellyfish float around the ruined hall like gentle lanterns. The water is clear and filled with tiny bubbles, dust, and floating light particles. Beyond the cracked giant tank, show the vague silhouette of a massive whale slowly passing through the blue water. The whale should not be fully clear; make it a distant, mysterious shadow that gives the scene scale and emotion. The overall mood is “a beautiful abandoned aquarium after closing forever,” “the sea has returned,” and “lonely but mesmerizing.” Use cinematic lighting, delicate details, soft painterly shading, rich blue tones, subtle cyan highlights, gentle reflections on water, and an emotional fantasy atmosphere. Make the boy feel very small compared to the huge ruined aquarium hall. Emphasize scale, silence, beauty, and nostalgia. No text, no logo, no readable letters.

Negative prompt: low quality, blurry, messy composition, horror, gore, scary monster, distorted anatomy, bad hands, extra fingers, missing fingers, deformed face, adult-looking boy, overly cute chibi style, overly realistic photo style, harsh neon colors, too dark, too bright, crowded composition, unclear setting, modern clean aquarium, readable text, logo, watermark, signature