Reasons (3)

The female thief was nearly invisible, but Billy didn't think that was one of her main abilities. Regardless, stopping her right now was impossible without making a commotion. Still, Billy had a feeling that she was going to do something big and troublesome… She wasn't going to just steal something. It seemed that she had something else in mind, but Billy didn't know what it was.

"Well now, what should I do…" Billy thought.

Following her was only natural. The real issue was what came after. In any case, Billy followed her and the carriage until they stopped on the side of a mansion that was just fifty meters away from the castle. The people inside the carriage left alongside the driver and some guards. Still, Billy didn't feel her presence moving after all. It seemed that she was waiting for something…