No wonder they never found any signs of any moving fortress… they were outside the planet. Luke didn't know how that was possible. However, considering that his fortress was like five times smaller, Luke assumed that the others had some extra features. Aside from summoning monsters and flying.
"Come to think of it… our ice castle is half of the size of the one we found in New York, I had forgotten about that," Luke said.
"There are many things we still don't know about the system… I suppose that adds to one of those," Shalia said. "Attacking their moving fortress isn't something we can't do in space…"
"Rina, what do you see when you use the crystal?" Luke asked.
"I can't see anything, but I can feel that I can control the fortress and make monsters spawn," Rina said.