"Juvia just... wanted to.. make you all... accept her.. as a true member of Fairy Tail. Juvia loves you guys!" - Juvia Lockser.
"If it's my family on the line, I'll be as dark and black a villain as I need to in order to protect 'em." - Gray Fullbuster.
The year, X794, is the year where Juvia Lockser returns from her two year long mission with terrible secrets brewing inside. Though they come out rather fast, she did want to hide them from her beloved guild, as Juvia thought it would result in her being shunned from the sweet guild forever. It was also a way to protect Gray and Lyon, as the news that she possesses could ruin their world. Using her mentor's alias, that's how she describes the person who saved her. That's not the problem any of them should be worried about, because they get a rude awakening when powerful mages with a leader holding onto them with an iron grip appears. Showing them that life can be very short, be careful you trust, and although you should keep your friends closer: keep your enemies closer.