Stophiar and the others had already deployed their own formation and were killing off a large number of demons. They were confident that they'd be able to out-speed anyone, so their main goal was to travel to a location in the city where they wouldn't be interfered with.
They formed a huge formation of light. All they needed to do was pump their Light Force into it and it would burn most low High Class demons to ash. As for the middle and high ones that entered, they would find themselves greatly weakened and they would be directly killed by Stophiar.
They couldn't move very fast due to the formation, but they didn't need to with so many demons swarming them in the first place. Stophiar himself had already jumped from around nine million to over 12 million in just a small while.