Survival Expert (Apocalypse)

In 2080, portals to another world opened across Blue Star, dragging the harmonious society into hell. After surviving in the apocalypse for 18 years, Zhu Yunhao is trampled underfoot by a Blood-Devouring Beast. As he dies, he looks bitterly at the backs of his cousin and childhood sweetheart, then blows himself up in a final act of defiance. When he opens his eyes again, he's back before the apocalypse. His cousin mooches off him, living at his place for free, and even steals things to give to someone else. His childhood sweetheart acts sweet to him day after day, but at night she plays hard to get, using every trick in the book to keep him at a distance. It doesn't matter. Zhu Yunhao takes all his belongings and heads out to gather supplies and build a safe stronghold. He'll get ahead of the game, so when the otherworld truly descends, he can ignore every rule and take his revenge to his heart's content. He used to be blinded by "love." Theme: Everything is about staying alive