User blog comment:KnocknickKnock/9 gates + master of the celestial realm/@comment-24066070-20131208182752/@comment-24066070-20131214004236

LOL, plot anti-armor is a nice one :D

But yeah, Lucy is a char I'm not that interested in (don't hate her either, just neutral) So I didn't pay that much attention to UM being cast, but your point of her being able to pull off a perfect UM when Hibiki gave it to her seems a very plausible one.

I do believe she will completely master UM at some point in the series, so then we'll likely get all the details regarding it. In fact, I really hope UM turns out to be a spell only Celestial Mages can use, then maybe more spells will be learned and that's better than introducing more golden keys or different spirit realms imho.