One of Simon's reason for picking Velmora City and not another city was because of a major ingredient he needed to evolve his one-horned demon bloodline into a Daemon bloodline.
The nine hundred and ninety nine (999) demon hearts of two-horned demons.
The Darkness Kingdom was a kingdom that was ruled by Two-Horned Winged Demons.
Simon wanted to obtain more information in Velmora City so that he'd know where he could find a settlement of two-horned demons he could kill.
He was not planning on destroying Velmora City since that would be beyond him with his current level.
However, Velmora City was the closest city to Vashar City in the Darkness Kingdom, and he planned on using the city to figure out the location of one of the main ingredients for his bloodline evolution.
But to his surprise and disbelief... A rift was opening near Velmora City.
A rift to Earth was nearby, and an invasion into Earth was on the horizon.
