Although Fang Ze planned to return it to her in a few days, it was a special period now, so he could just borrow it for a while!
The remaining question was, which of Fang Ze's abilities should be replaced by the [Darkness] ability to minimize its impact on him.
Fang Ze had seven abilities: Credit World, Verbal Contract, Unfair Trade, Currency Exploitation, Compulsory Taxation, Personal Deprivation, and Faith Trade.
Among these, [Credit World] was the main ability, verified by World Origin as a noble ability, and couldn't be replaced.
[Verbal Contract] and [Personal Deprivation] controlled several key subordinates, and would fail if replaced, so they couldn't be replaced!
[Unfair Trade], [Currency Exploitation], and [Faith Trade] were the cornerstones of Fang Ze's plan, hence they couldn't be replaced either!
That left only [Compulsory Taxation], which could temporally free up an ability slot!
