User blog comment:Omega natsu2/Fairy Tail Episode 197: The Time of Life, Review./@comment-1359322-20140901091414/@comment-25111584-20140901102200

Hmmm, maybe the tattoo was just to show that he is becoming a Devil Slayer, like the markings during the Second Origin release. The 'Shuuu' might be the tattoo disappearing, showing that he is now a complete Devil Slayer. I know I said that it's better if this was temporary, just like many other people, but am now over the disappointment, so now hope that this means that the power is permanent. If so ... AWESOME! \(^_^)/