User blog comment:Omega natsu2/Fairy Tail Episode 197: Hisui Rises, Review./@comment-4449950-20141108090820/@comment-7418318-20141108115707

As I understood it, the Son had the real box the entire time until Natsu got it back. Only at the moment of the Shark Body Press did Arcadios hide away the real box and throw up the fake box for the Spirits to catch.