English translation
After the battle with the invading giant mecha, an alien attempted to run away as it exploded... I chased down the enemy commander!! "Well, I can't run away anymore!!" "Fufufu, you're so naive!! While we were fighting, the factory for mass production of soldiers was restored!! By now the first squadron should be invading Earth!! How's that!!" ...oh no!! It was too late!! I hurried back to Earth... So, it was indeed too late...!!