Your eyes!!
Because he was not sure how much time had passed, Jason assumed that it was best for them to leave the core area of the mana vein as soon as possible.
His masters were probably worried about his well-being but this was not the reason for Jason to hurry up.
After the primal awakening of the Celestia bloodline had been completed, Jason felt an ominous feeling approaching him.
It was as if something huge was or had already happened!
From what his soulbonds transmitted to him afterward, Jason comprehended that the silverish-golden aura could be sensed over a long distance too!
If the glow, released by his primal awakening could be perceived throughout the whole mana vein, how far was the radius at which others could sense his aura during the bloodline awakening?
He was not sure, but it had to be a vast range. Adding the factor that he estimated some races to have superior senses to humans, Jason broke out into a sweat.