Plot

In a post-apocalyptic world of fortified cities, refugee Ren Xiaosu and his friend Yan Liuyuan struggle for survival outside the walls, determined to find their way into safety while facing countless challenges.

Facing an uncertain environment and future, fortresses are built one after another. Refugees flock to the exterior of these walls for survival, hoping that one day they can enter a fortress. Our main lead, Ren Xiaosu is one of them. With indomitable will, Ren Xiaosu and Yan Liuyuan are determined to move forward for a shot at survival. They keep advancing by absorbing positive energy, changing the world with every step.—Made By Bilibili

A new era begins in a devastated world gripped by nuclear winter. Humans are no longer in control of the world, and crises emerged one after another. As mankind tried to rebuild order, the protagonist Ren Xiaosu stepped up with his positive energy, and in the process changed the world.—MyAnimeList

After a great catastrophe struck, the world was set back many years and humanity started living in anarchy. With time, society started building up again and people were now living in walled strongholds and fringe towns across the land. Humans have also become distrustful and ruthless in an unforgiving society where the strong survive and the weak are eliminated. Growing up in such an era, Ren Xiaosu had to fend for himself. After an incident, he gained supernatural powers.—Anime-Planet

The world where humanity no longer dominates due to experiencing a nuclear winter. In this setting, species have mutated, and survival resources are scarce. Faced with an unpredictable future and environment, crises occur frequently. To protect themselves, humans have built barriers, but many people still live outside these fortifications, relying on hunting in the wilderness for survival.—TheTVDB