Ibro knew his actions wouldn't cause any effect for the moment, but he would keep absorbing the demon gates without stopping. He didn't release his skeletons as he wanted to decrease the load over the city first.
The system kept sending all the demons under Ibro's divine sense to his pocket world. After a few hours, Ibro discovered the gates he took were replaced with other gates.
That was weird, this wasn't a tactic to take this city down, it was a tactic to surround him here and never let him leave. Ibro asked himself the most logical question: why?
'Come to me, we need to leave here and scout this world.'
Ibro connected with Maya's divine sense as he sent her this message. At the same time, he started to pour out his skeletons all around the place.
All the areas around the city for over 50k kilometers were filled with demons without exception, so he couldn't find a suitable place to release his skeletons as usual.