The Hivemind is like a network of minds linked together, resembling a vast neural network system. Neurons fire electrical pulses every millionth of a second.
Klaus is currently housing twenty minds. These twenty minds are all interconnected to form the Hivemind.
The battle had already drained him, but he had to win. When the Senior spoke at such a critical moment, Klaus paused and recalled all his spirit weapons, including the Demon-Cutting Discs.
The only thing left was his wings, which he used to fly at terrifying speeds, evading every attack. He devoted just one mind to controlling his flight while the remaining nineteen were engaged in something he never thought he would attempt.
As the Senior had said, he had the Hivemind, so he had to use it to think.
