C763 Diving

The previous exploration had let First Legion know that the ground of the Sky Cavern was filled with water, a world of water.

If he wanted to explore Subterranean Space, he had to bring a boat.

As a result, every team had two Mobilization Soldier carrying a large sack.

One person had a folded rubber dinghy in his backpack, while the other had a small engine.

For the sake of this exploration