Noah and June remained among the four tornados for a while. She needed time to heal the many injuries that the worms had left on her body, and no one disturbed them during those years.
The fragile environment of the eighth floor didn't allow the two to express their passion after June healed. They risked destroying everything if they let their power run freely, so they went back to business.
Noah had made up his mind about his final target, but he had another step to complete before clearing the eighth floor. June had defeated the worms, but she had left some of them alive because she knew that Heaven and Earth's Cancer might need them.
Noah and June found a small group of clouds when they entered the worms' separate dimension. The Labyrinth had yet to rebuild the materials that those creatures required to thrive, so the danger in the area was barely noticeable.