User blog comment:BlackWizardZeref/Fairy Tail Chapter 384: Attack of the Celestials Review/@comment-7418318-20140516225538/@comment-24039250-20140517002335

Still, its good that summoning the C.K isn't something as simple as getting a key. That would make Lucy OP. Tho if the C.K made a key for Lucy that would allow her to summon him as well as remake Aquarius due to pure respect for her as a Celestial Spirit Mage, then that would be cool. It would come in handy for the final arc since that will likely have Zeref and Acnologia and they will need all the power-ups they could get.