User blog comment:Omega natsu2/Fairy Tail Episode 197: Hisui Rises, Review./@comment-4999650-20141108212312

I sure hope the anime team isn't pushing it by creating these sorts of fillers (Hisui being a CS Mage, also the 2 Silver spirits).

Also, since Yukino hasn't been summoning, or even mentioning, Ophiuchus, I'm starting to think there's a pre-requisite to her being able to summon the 13th key. It would obviously have to be something she did when she summoned it vs. Kagura... but who knows.

Next chapter has Juvia~ Perhaps she will face Eclipse Aquarius? :D