They indeed belonged to the Castle Mercenary Corps, and not just any ordinary members but the elite among them, jointly known as the Four Horsemen of Death along with the red-haired Rena.
"Allow me to introduce myself, my name is Ai Ning," said the blonde woman as she introduced herself. The man next to her also spoke to Black Dragon, "My name is Stanin; he is our leader, Alfred."
Alfred glanced at those few corpses and chuckled coldly, "Black Dragon, how exactly do you manage your subordinates? To be humiliated by your own men to such an extent?"
"Someone used evil magic to control them," Black Dragon said through gritted teeth, furious. As the pain from the wound on his back caused him to squint continuously, he added, "If I find out who it is, I swear they will die!"
"Enough, that's your problem; we can't be bothered with it," Alfred snorted. "Tell me where Rena is. And also, let me know about any troublesome people around her so I can deal with them all together."