Mutant Beast Genes: I Rise to the Top of the Wasteland Through Fusion

In 2077, the entire world was suddenly shrouded in a strange "gray fog." Countless ferocious alien beasts emerged from within it, devouring people and destroying civilization. The few humans left huddled in various safe zones, scraping by on meager supplies. Inside, the safe zones were ruled by rigid class divisions and the law of the jungle; outside, alien beasts lurked everywhere and danger was constant. Lin Chen had been a lowly drifter in a safe zone in his previous life. Timid by nature, he was bullied by the wealthy survivors and betrayed by his companions, then finally devoured by alien beasts, dying full of hatred. Reborn three days before the apocalypse began, he awakens the [Alien Beast Gene Fusion System], which lets him extract fragments of alien beast genes and gain corresponding abilities by fusing them. There is no bottleneck to his growth. Ruthless and decisive, never softhearted, and always sharp-witted, he will eventually become the "King of All Beasts."