"Well we're here." Godzilla spoke for he casually stomped on the Japan soil, upon which he casually fired off his radioactive breath to set fire on the JSDF sent to take care of him.
"Is it good or bad that it took this long for us to get here?" Rodan asked while flapping his wings to cause the various skyscrapers in a remote Japanese city to go wonky.
Godzilla thought for a moment, swapping the shooting planes around him with his tail. "I feel that it's good potentially."
Rodan simply glided through the air to cause the dirt to pick up and blind the army forces shooting at them. "So be it."
Alas it wasn't out of the question that Godzilla and Rodan bested Japan's defense by doing something stupid.