When rifts in space and time opened wide and hordes of demonic beasts poured through, humanity suffered a devastating catastrophe.
Lu Chen, one of humanity's strongest fighters, died while leading his team against a Demon King in the Forbidden Lands.
When he opened his eyes again, he found himself outside the rift. But his soul had possessed the body of a high school student named Lu Chen, who had just been bullied to death. More than fifty years had passed in the outside world.
To fulfill his final wish and avenge the high school student, Lu Chen joins forces with a strange creature named Sake, which he brought back from the Forbidden Lands.
Sake turns the demonic beasts Lu Chen kills into energy for him, while Lu Chen takes Systems from other people's bodies to help Sake repair itself.
“Ha ha ha! I'll tell you straight: I have a System. I'm the chosen one. I'm invincible.”
A moment later, Lu Chen looked down at the “System user” lying on the ground, barely alive, and said regretfully, “Aw, why'd you lie to me? Having a System didn't make you invincible. If I'd known, I would've gone easier on you.”
