It is mine

After one month the group began to move, they finally saw some things happening on their next destination. They saw thousands of containers flying toward their Eastern side… they were a bit different from the ones that made the mana cargo escape the mettalic base with most parts of the cannon, so their contents should be different.

"If they aren't sending the mana that they collected, what are they sending them?" Esmeralda asked.

"It is hard to say," Rain said. "All that I can guess is that they are using mana as a source fuel in that world to do something else. What do you think, Sakaki?"