The aura of that crystal was quite similar to the energy crystal dropped by the Evil Spirit Knight, only it was thicker and more vast.
After some thought, Rein lifted the crystal with the tip of his sword and took it out.
As soon as it was in his hand, a system prompt sounded:
[Ding! Detected unknown energy that can be absorbed. Do you wish to absorb it? (Note: After absorption, it can be converted into specified Professional Experience Points.)]
As expected!
This must be a kind of energy body that is even more advanced than the energy crystal.
After all the hard work, it was finally time for the harvest.
Rein felt a surge of joy in his heart and didn't hesitate to choose 'Yes!'
The next second, the thick black energy that flowed within the walnut-sized crystal suddenly rushed into Rein's body through his arm.
Just like last time, this time Rein once again didn't feel any discomfort, and the whole absorption and conversion process was over.