Chapter 664: Chapter 664 The Strength Of The Dark Faction

After hearing the mysterious voice speak to him, Mantis didn't know why, but his heart thudded once again. The great pain that he felt during his match with Simyon had returned and this time he wasn't even in a fight.

Quickly, he had no choice but to lean up against the wall with his shoulder. 'The pain, why is it back?

Is it because of that person's threat?' The pain once again shot through his back. Trying to bear the pain within, he lifted his hand and started to cover his face.