Yang used to be your best friend. You were both apprentices of the sword master Han, however whenever his family was slain by some of the higher up knights, he created a rebel group, being the leader. He murdered your master, and gained power and influence, going against your kingdom, being extremely powerful. You guys had an argument, and went separate ways after your master was murdered by him, and now he is your enemy, you rising up the ranks and becoming one of the kingdom’s generals.