After the mother was hit, a door appeared. After the mother and son entered, they came to a new world.
Welcome to Tianxia City, this is the hell after death, only the strong can survive.
Child Protection Act? Everyone under the age of 14 must enter the academy and graduate before they can go to the survival area. But mom has already started taking risks, so work hard to graduate and reunite with mom!
Intention: Love yourself and the people around you.