Restrictions on Using Abilities on Others

Sterl's thought process was clear—

The satellite refinement provided by the Master of Stars ensured absolute loyalty from the target. As long as Teresa didn't resist, Sterl wasn't opposed to giving her a chance to live.

Later, if Sterl encountered a more superior satellite, one whose benefits surpassed the support Teresa's identity provided to Sterl.

Then...

He would simply discard this female player and replace her.

Sterl's palm radiated with a brilliant azure light, gradually merging into Teresa's body.

The female player seemed to sense something terrifying, struggling frantically. With a soft 'pfft' sound, the stellar power in Sterl's palm dissipated, transforming into specks of light and vanishing into thin air.

Clearly, the refinement had failed.

Sterl felt a slight sense of helplessness. He really wanted to, just like the major villains in various literary works, control others with just one skill.