User blog comment:Axlorg89/Fairy Tail Filler Arc Incoming *Updated*/@comment-203.215.121.84-20140924124504/@comment-7418318-20140924132357

It could be so far in the past that Lucy didn't play an active role yet, for example it could be about Layla.

Just because she didn't own Virgo and Leo when she passed on her keys, doesn't mean she was never involved with them in some way.

Or for all we know it could even be about Will Neville... though I somehow doubt the KotSS arc will be revisited.