From MC's perspective:
Goodwill City,
Jonathan was successful in demolishing the stadium. When the smoke was gone. Things became even more clear.
He knows people will visit the place shortly. Then the whole city will be in turmoil. And all 6 academies will be confused.
He intends to stay here and warn them. Instead of letting them know one by one. Then he removed the barrier and placed the disk back in his storage ring.
Meanwhile,
When the barrier was gone. An eery silence began to spread around. The guards who are down started to wake one by one.
Jonathan thought someone else would come here. But the Guards have woken up just in time.
The guards felt panicked before started looking for others. Some of their gaze is set on the stadium.
But everyone's expression turned grave and their eyes widened in disbelief.