As Grey watched the figure of the wolf girl quickly fade into the darkness, he calmly retracted his gaze before lowering his head and glancing at his forearm.
There was a small black patch on his skin.
It was creeping outward at an extremely slow pace, spreading like a stain across his flesh.
A faint pain suddenly emerged from within Grey's body. His naturally poison-resistant physique had instinctively begun fighting against the foreign substance that had entered his body.
Grey did not immediately urge the purple crystal to take action.
Instead, he quietly observed the black patch.
He wanted to determine just how potent the poison used by the young girl was and whether it possessed enough power to cause any significant impact on his body.
Several minutes passed.
Yet the black patch did not grow any larger.
