Master's Achilles heel

"You betrayer!" He kicked Alcina. Of course, she was a little injured. She had taught him well. Still, the pathetic thing failed pathetically. "Prince Amaris made you the Queen of Serpent. You betrayed him by leaving the organization. What right do you have to reprimand me?" 

Alcina took two black pins out of her bun and stabbed him in the neck. Enough of the fight. She wasn't in the mood to fight. 

"First of all, you don't deserve to call me a betrayer when you betrayed your teacher for benefits from that good for nothing prince. Secondly, do you think the chief would have let me leave just like this? I fucking made a deal with him for my freedom. He asked me to kill Lord Tang in order to leave the organization. I killed him and won my independence. I do not care about the lies Amaris has fed you." 

The young lad had fallen on the ground yet he didn't lose the fight. "Prince Amaris killed that dreadful Tang--"