One week has passed since they started training and Willian was growing stronger at a terrifying pace. He was now able to go toe-to-toe with Helios. The two people were using weapons and the fight was intense.
Oz and Ax had given up on the brainwashing routine temporarily and were observing the two people fight from the sidelines. They were sure that Helios would not hold back and could injure Willian to teach him. They have never known their colleague to be holding back. He was known as the monster guard for the reason that his blade knew no mercy.
That said, Willian was not weak as well, he was putting up a thought fight against the man in a black cloak. As an experienced hunter, Willian was aware of his shortcomings and also how to overcome them, these past few days he had done just that. Helios was surprised deep inside his heart and he increased the grinding power to make this guy stronger.