The Strongest Universe

Aidan Li was originally from a holy universe with immortals everywhere but, when one of their allies suddenly attack their world everyone including Aidan is slaughtered and their world is captured. However, Aidan is then reborn in a low level world called the divine continent. Unfortunately, on his fourteenth birthday his mother is kidnapped by her family from a higher level world. Just as he thought the world had given up on him he got a system that could be used to upgrade the divine continent. After which he vowed to make the divine continent the strongest world to ever exist so he and his world would never be bullied again. Inspired by building the ultimate fantasy.