Vole was trying to convince and warn Xelin from this fight. After he discovered that his opponent was possessed one of the valuable power in this world which was the [Transformation magic].
Yes! In this world, the Duel was also signified for their dignity since this was the way how you were going to show your abilities to others. So it was way better if Vole would not interfere in this match despite the current situation that he had.
"Please, Xel! Listen to me! I know that you are aware that this man is the type of guy that you can't defeat no matter how hard you try!" Vole was persistent to persuade him to save the invasion's head from the brick of death.
Xelin's eyes were widened as he heard these words. Nonetheless, he could not expect that his intuition of this match would be accurate. "Stop it right there, Vole! This duel is sacred for me. Also, who says that I can't win against him?" He asked in a deep tone, avoiding showing expression to everyone.