Strongest Mage with the Lust system - Chapter 521 Lust Overlord’s bloodline

A continuation from where High School DxD Volume 25 left off.

“Before the towers fell, before everything was consumed by darkness...”Leo Astralis whispered to himself while traversing through the rubble of the ancient structure.His body bore the scars of survival, bite marks that throbbed against the coarse, blood-stiffened fabric of his clothing.“..I wonder what the world was like.”After humanity failed to complete the Tower almost 700 years ago in time, it exploded, spreading monsters all over the word.Even the system, which blessed humans with power, had abandoned them. Or did it?[Run]A singular message urged Leo to escape, yet it was short lived as was he was caught like an animal in a trap.And just like an animal he lashed out until the very end, taking one of the captors to the grave with him.But as darkness closed in, the system spoke again.[One time Regression activated][Congratulations. You've activated the Heart of the System]

Lin Chen, a poor boy from a model agency, occasionally inherited a peerless doctor. From then on, he has been unparalleled in medicine, able to resurrect the world and help the world.

He contends with the sun and the moon, and takes his life to heaven and earth. And all this began when that sexy and beautiful model gave him an ancient book…

- Description from MTL