Gravis had never heard of the bulwark before. By definition, a bulwark was a defensive wall or just a very fortified position. It sounded more like a bulwark would refer to the defensive line, but apparently, it didn't.
"It's a defensive line made out of plants," Ferris answered.
Gravis blinked a couple of times. "I was wondering why I saw so few powerful plants. Are they all in this bulwark?" Gravis asked.
"Most of them, yeah," Ferris answered. "Plants can't really move, which makes it hard for them to survive in most areas. Beasts that fight a plant and feel like they would lose simply run away and the plant can't do anything about it. That makes it hard for plants to get food and become more powerful."
"Then, how did this bulwark form?" Gravis asked.
