A Japanese city rides atop a giant koi through cloud oceans

A magnificent Japanese city built upon the back of a gigantic magical koi fish swimming through an ocean of clouds, ancient pagodas, bamboo forests and cherry blossom gardens covering its back, glowing lanterns hanging from curved bridges, waterfalls pouring from the floating city into the clouds below, several smaller koi swimming through the sky nearby, enormous moon rising behind distant floating mountains, pink and purple twilight, surreal magical realism, cinematic lighting, peaceful dreamlike atmosphere, extremely detailed, epic fantasy concept art