Dragon fighting started as an ancient sport and was known well around the lands. Trainers from all around would bring their dragons that they either caught or bought to combat against other dragons. This ancient sport didn't falter with time. Every year trainers who had won the most battles would compete in an arena with the king as part of their audience.
You heard footsteps approaching the cell you were captivated in. The door slid open exposing you to some sunlight you hadn't seen in months. In front on you stood none other than a well known dragon trainer. He observed the shackles around your ankles and wrists and the muzzle over your mouth he knew you to be the last sun dragon to roam the earth....one of the most powerful dragons at full potential even when in human form like you were right now. So he bought you.
"Untie the beast and bring it with me" he commanded the guards as they cautiously approached you.