Witch Hunter Robin

With Karasuma captured by the Factory, the team mobilizes to rescue her from an uncertain faith. They secretly gather to form a plan for the dangerous mission, one where they must not only get past Zaizen's watchful eye and armed guards, but also navigate a labyrinth of rooms and corridors. As Robin works with the team, though, the Factory Researcher's words haunt her. Why did he call her the 'Devil's Child'?