One evil beast's heart was naturally not enough for them to absorb. However, after absorbing three of them, the energy in their bodies had already reached saturation, and there were so much that it spilled out. Under these circumstances, there were only two possibilities to absorb and digest the energy. One was to evolve the synthetic souls. However, they had already reached their limits. They were no match for the spiritual beasts. When the energy in the body reached its limit, they could evolve and absorb the energy. They were just a kind of spiritual creature, and there was no concept of evolution at all. Hence, the nine of them could only wait for the Phantom Palace to absorb the energy in their bodies to last.
However, Shadow was currently facing them with his back facing them. Furth
