Harker did not have any thoughts of trying to face Arthur in a one versus one fight, especially after he saw how Alastair ended.
He knelled, and looked at Arthur with teary eyes, "please, spare us! Me and the Von Stein family will work for you forever."
Arthur looked at him with a smirk and said, "add a blood pact, and then we can discuss this."
"Of course, of course. I can make a blood pact to prove my loyalty," Harker said, sighing in relief after seeing that Arthur had showed him room for a conversation.
"Well, not only you, but the pact must include anyone from the Von Stein family. An eternity of serving me, or dying right here. What do you say?"
"This…"
The only reason Arthur even considered doing that was because he would soon leave the planet, and having a powerful ally to work for the dragons, and any of his allies, was just too good to pass.
"Or you rather die?" Arthur said, moving his hand slowly toward the grip of his crimson-red spear.