He is angry
Matt clenched his fist as soon as he saw this, '...It seems like the rules can't be violated, but it's possible to come close to violating them without being penalized, huh.' He thought to himself as his chest rose and fell slightly in anger.
He initially thought the directors would stop that attack, but they did not...
'Looks like I can still overdo it some more, huh!?' He shouted inside his mind and raised his hand to stop a powerful attack coming from his side.
"Don't get distracted, you little bastard!" shouted Paul Brown with a sneer.
Still, Matt didn't pay much attention to him.
He watched Isla's fight again and saw the moment Isla was kicked under the arena.
'That last kick wasn't necessary either...' He thought and looked from afar at Isla, then gave a stern look to the referee, who was standing stupidly at the side of the arena.
This one then understood what was going on and ran to her.