User blog comment:BlackWizardZeref/Fairy Tail Chapter 382: Alegria/@comment-24734283-20140428212423/@comment-7418318-20140429082252

Maybe both. To summon the Spirit King is bound to take a shit-load of magic power.

I used to think that Yukino would either be killed or badly hurt, but since the reveal that Angel is her sister for sure and that Angel now has magic other than Celestial Spirit Magic, maybe Yukino will learn this angel-summoning from her sister and give her keys to Lucy without being taken out.

I used to think that it'd be fine for Yukino to be killed in a dramatic and sad event, but now I really hope she'll be able to live happily ever after with her sister.