User blog comment:B214/Question and Answers/@comment-213.106.131.123-20131027111702/@comment-1359322-20131027130717

Not possible, since if the blue flame exist, then the Phenex clan would've known about it. Or at least some Devils, Angels, or Fallen Angels, or maybe even those of other mythology would've known it, if it's not mentioned till now, then it isn't in it. For starters, just because the Phenex clan is related to the Phoenix doesn't mean they have all the full abilities of the Phoenix, they're still Devils in the end.