Reasons (2)

It didn't take long for all the people of that village to be assembled. Some people knew Gilles others recognized him immediately. Thanks to that, they didn't make much of a fuss. Still, some explanations were required. While Gilles was dealing with that, Billy was facing the now handcuffed Captain. Billy also covered his mouth with some cloth to prevent him from speaking. In the end, he couldn't just kill him. He had to try to find a way to lift the brainwashing.

After using Check-Up, Billy confirmed that there was this unknown mana active in the Captain's brain. Still, just putting mana into his brain to fight that wouldn't do it. Who knows how much Billy would need for that to work… Attacking him would raise questions among the other villages, though.

"You have been brainwashed, do you realize that?" Billy asked.