User blog comment:Selim 009/Seven Dragons Vs. Seven Dragon Slayers/@comment-15382134-20130428203745

Juvia being a dragon slayer? There is a slight chance. She obviously can't be a first generation dragon slayer since she hasn't said anything about it but she could be a second generation dragon slayer. Maybe Jose Porla put a dragon lacrima inside her without her knowing it (maybe while she was asleep). And the reason I think this is possible is because of this dragon: Since there's a fire dragon (for natsu) and an iron dragon (the one Sabertooth are fighting right now) for Gajeel so maybe there could be a water dragon for juvia... But of course Laxus could handle this dragon since water is weak against lightning (logically). But I guess Cobra joining the fray is the most reasonable option and that would explain what's the favor Jellal asked from Lahar & Mest.