Sam is occupied with his training. He wanted to use the time to improve his Fast Slash technique. He has recently been using that technique and gaining experience points.
He is almost ready to level up his Fast Slash technique. Sam, of course, did not want to pass up that opportunity, so he concentrated entirely on improving his technique.
It does not mean he is not working on his other techniques. Remember that he did not use those techniques until now because he intended to use them in the quarterfinals or against a strong opponent.
Until now, he had not encountered a strong opponent who forced him to use those techniques.
The following match is against Simon. Although he is not as powerful as Sam, he has great potential. Certainly, with the help of his Warrior family, he could improve himself.
Simon's goal during the match will be to defeat him. This is another reason Sam became more dedicated to his training.