Nero activated his God's eyes and scanned the entire area. He aimed his open hand at the ground and closed it by forming a fist— as though he was trying to grasp something. Then, he raised his other hand and formed a fist that emitted blue fire.
BOOM!
With a loud boom, Nero launched himself down and punched the ground. Cracks appeared all over the ground as the wall broke and fell on the outer side.
The ground erupted blue fire and turned everyone into ashes— but not the women and the girls and boys.
Females and virgin boys had a contrasting physique, so when Nero used his God's eyes, he was able to differentiate males and females as well as boys.
Before Nero punched the ground and erupted it into the blue fire, he made a barrier around them so it didn't affect them.