You swing your swor directly at his chest in attack you are sure will not be blocked due to the sheer speed you make your attack with. However, Lars is just as agile as you and is able to intercept your sword with his, ending your attack upon him. Bors gives a harsh laugh at your failure to hit his brother.
You can try to attack his now outstretched arm to cut it off and make this fight even. Or, you could try to defend against any trick attacks he might pull now.