Even after Lucy brought Joshua back to the island, Joshua didn't take his eyes away from the circle in his hand. Joshua had finally awakened his inclination, so there was no way he was just going to continue on with his day as if nothing had happened. But aside from the ring's appearance, there didn't seem to be anything magical or special about it, and nothing happened when Joshua waved it around.
And after some time, against Joshua's will, the ring disappeared back into his symbol, and no matter what he did, Joshua couldn't bring it back out. Joshua began panicking since it almost looked like the inclination had gone back into dormancy. He almost began scratching his chest to try and forcefully dig the circle back out. Fortunately, Lucy was there and stopped him.
