Rex tried hard to mask his shock but he could not.
His system was his number 1 secret that he had never told anyone about, not his childhood friends nor his sworn siblings, none of them knew.
The more he grew as a mystic warrior, the more he understood how valuable his system was and was why he was even more reluctant to reveal the secret.
Over the year and few months, while growing stronger, he also tried to search for anything and news related to his system to try deducing its real nature but he was not able to find anything of the sort.
Hearing Swift Spear mentioning this sensitive secret of his so nonchalantly, it was not surprising that Rex was so shaken by it.
He looked at her as his lips quivered. "H-how did you know?"
Swift Spear kept silent for a few seconds as Rex's heart rose to his throat.
Instinctively, killing intent was already rising within him as his lips stopped quivering while his eyes narrowed dangerously.
