Weren't they the reinforcements?

Axel then sent his energy into the blade of his father's sword, causing its Golden runic symbols to appear, and a Golden aura immediately surrounded Axel's body as the runic symbols began to glow intensely.

Even Miguel frowned at this phenomenon, and the powers Axel was now displaying far surpassed his former level.

So it was to get this kind of result that they had taken so much risk by doing this right in the middle of a fight… Miguel wasn't going to let it slide but he had never thought that the powers Axel could get could be so much.

The son was now able to fight his father on an equal footing, as both were now at roughly the same level, and only Mykael's combat experience gave him a clear advantage over his son.