A hyperrealistic photograph of a tiny, smiling koala bear hanging from a high-rise office window by a harness, cleaning the glass with a cloth. The koala is surrounded by the bustling city skyline, with towering skyscrapers and passing cars visible through the window. Inside the office, a minimalist workspace with a sleek desk and modern equipment contrasts with the unusual sight outside. The koala's cheerful expression and the serene cityscape create a whimsical and heartwarming scene. --ar 1:1 --niji 6