It took only a single night for every human on Hector's side to return to Earth. Since the travel had been pretty short and fast, every single person started to help with the construction of the new walls of the city while the soldiers watched the surroundings and killed the monsters who appeared. Meanwhile, Hector, Amanda, Maya, Sarah, Sasha, and Betty started to build using their own magic, a temporary center of operations. Once the building was half made and not many people could see what was happening inside of it, Leon used Transfer and appeared inside of it. The very moment Leon appeared, he activated Mana Concealment because he didn't want to be noticed.
"Leon?" Hector frowned. "It is good to meet you, but... what are you doing here, and why did you appear so suddenly?"
"Lower your voice," Leon said. "I came here to tell that there is a chance that some allies of the terrorists might have infiltrated your camp, don't spread this information and be careful."
