With the once-beautiful city of Osaka now in ruins, Godzilla and Anguirus fight around the partly-restored castle, and Godzilla slams Anguirus into the castle's keep, demolishing it with little effort. Anguirus, severely injured atop the ruins of the keep, tried desperately to fight back, but was killed after Godzilla bit into his neck with his jaws, then burnt the corpse with a blast of his Atomic Breath. Anguirus' lifeless body toppled off the remains of the Castle, and into the Okawa River.
During Barugon's rampage through Osaka, he came very close to the castle and when a few jets attacked, he froze the tower with his freeze breath. A short time later, Barugon unleashed his Rainbow Beam and destroyed most of the long-range missile launchers that were firing at him. Gamera arrived in Osaka and battled Barugon, but was frozen by Barugon's freeze breath. Gamera eventually thawed and flew after Barugon, thawing the castle in the process.