Hello, master. I am Project Battle Maid's Black Wyrm S9. Unlike other sisters, I specialize in single target protection in large-scale battles.

We used to have kind and sensible personality unlike now. It was to have us protect our target regardless of our own safety by making us feel empathy toward our target. But precisely due to that, previous models put the targets in danger because of that empathy, and sometimes became useless due to emotional shock from their protected target's death.