User blog comment:Miraka/Prediction of Chapter 385: Spirit King vs King of Hades/@comment-112.210.184.116-20140517132454/@comment-7418318-20140521225213

I don't think the Celestial Spirit King would just take the keys from Yukino without her consent. And even if he would, Lucy probably wouldn't accept them.

Swords eh? Did you by any chance read the fanfict "Wings of the Black Dragon"? Because there Lucy, among other things, also uses two powerful magical swords from the Spirit World to fight. Though I like your idea of wielding the whip and a sword more than her wielding two swords. One for mid range and immobilizing and the other for close range and damage dealing.