User blog comment:FairyRaven/Fairy Tail Chapter 370: Demons Reincarnated, Review and Commentary/@comment-4489126-20140207103945/@comment-7418318-20140207111905

I seriously hope there won't be a Celestial Dragon, since that concept is just stupid (if it turns out to be literally that).

But I think it's more likely to refer to either Wendy or Grandeeney. Tenryu can be translated both a Sky Dragon and Heaven Dragon.