User blog comment:Omega natsu2/...One Year Has Gone By/@comment-24.90.138.80-20150128232943/@comment-4933386-20150131024502

It's one of the most significant event in the manga and you missed it? Wow.

Anyway, It's set soon after Lucy have to break one of her keys(Aquarius) in order to summon The Celestial Spirit King. While Lucy was struggling with grief and unable to fight the demons all by herself, CSK bestow her some temporary powers which derived from Aquarius.