The Secondary System was treading on thin ice here. Even though it had transformed into a brand-new type of System, the core of it was in the end the Main Character System fragment.
If that was removed, it would lose its Core Skill and dissipate in a matter of seconds. It could be said that the Secondary System was pretty much an extension, a mutation of sorts that a Main Character System fragment had experienced.
So, Arnark was still able to reclaim its powers. Therefore, it had to first hide itself to the limit and grow gradually. Following that, it would work on veering off from Arnark's control. That way, it could survive.
"I should exercise," Ying said, getting up from the bed after three hours, fully fresh as he took a pair of dumbbells and began to exercise. As he exercised, his muscles adapted to his newfound powers better, especially the energy he devoured from the Orc-Dragon.