User blog comment:FairyRaven/Fairy Tail Chapter 399: Wings of Despair, Review and Commentary/@comment-5593752-20140908132855/@comment-5840892-20140908162729

Well in reference to another Dragon Slayer: I remember reading a few of Hiro's published concept notes, and there were references to a PLANNED Water Dragon Slayer appearing at some point, originally in the form of waif-errhrmmmm*coughcough*Wendy. But that was scrapped, so I have been waiting to see if one appears. I doubt it will happen now, BUT I'm just noting that as your statement made me remember it.