Board Thread:Off Topic/@comment-24993958-20160402201256/@comment-27450328-20160415230446

Phantomlink959 wrote: In the lack of evidence, the simplest answer is assumed to be the truth. We have no information to imply a semblance will directly harm its user, however as aura is protective in nature it is simplest to assume it would not give a person an ability that will directly harm the user. The semblance is not something that would directly harm him, it is just bad luck to be born with a smoke semblance AND the Remnant equivalent of asthma. Or, if you are still not comfortable with it, you could said that he hurt his lungs while going into his father's lab and inhale dangerous substances.

And, to justify the losing an arm part, I will use Spirited's idea of his dad trying to determinate/modify/enhance his son's semblance but messing up and taking an arm away. Maybe it just happens like "Uh, I wonder what his semblance is, maybe if I infuse this..." and the arm goes BOOM with smoke --> the dad have his awnser and Ray lost his arm and any respect for his father. The end.