The blood on the floor was revealed to be that of Bjorn, Brynjar had stabbed him right through his torso. It was a clean stab through his stomach.
Tyr's face went numb but his brother did something that surprised him, he had no intentions of attacking Brynjar but Brynjar doing this eliminated the rule of the duel allowing Bjorn to get involved.
Bjorn grabbed his wrist with both hands, and he could see the calm look on Brynjar's face crack.
"D-DO IT NOW BROTHER! I WILL GLADLY DIE HERE IF IT MEANS KATTEGAT STANDS FOR EVEN ANOTHER SECOND!" Bjorn screamed and Tyr, who had tears in his eyes, ran towards Brynjar with such speed that it looked almost blinding.
It was a lot faster than his previous attack, and Brynjar struggled in vain to break free from Bjorn's grip. Bjorn knew this might be his last act and wanted it to be a fruitful one.