Tag you're it!

[i]”Ah-ha!” [/b] the winged boy cried as the pup shot free of his hiding place like an arrow. “You turned visible again!” he called out to the fleeing pup as he restarted his pursuit. This took them back along the path they had followed in the first place, retracing their steps.

The next thing Mortis knew, Arc was tumbling through the air. Putting on a burst of speed, Mortis leaped and slid across the ground. His paws outstretched to catch the tumbling boy. Arc however hit the ground first, and then Mort's paws scooped him up. He could immediately see that the other boy was fine, so he picked him up into the air and wiggled him in front of his face. “I caught you! You're mine now!” he warned

"Mortis Fatalis"