User blog comment:IamJakuhoRaikoben/Chapter 398: The Final Duels, Review./@comment-83.255.195.39-20140903143331

The tattoo that Gray got from Silver was not on his arm when he talked to Gajeel but it appeared when Gray was about to attack Tempesta. I hope that means that he can turn it on or off anytime he wants and same with Lucy and the Aquarius tattoo she got. Also hope that means that both Gray and Lucys new powers are permanent.