Global Atavism: My Cards Are Super Rare

No harem, no holy mother, decisive killing. He does not pamper his sister, does not save his mother, and is a loner. Genes mutate, the world begins to return to its ancestors, and strange beasts appear in the mountains and seas. When humans lose their proud wisdom, how can they survive in this apocalyptic world with physical strength? The protagonist Wei Jiyuan accidentally acquires the card system. N grade (normal), R grade (rare), SR grade (super rare), SSR (special super rare), UR (extremely rare). When Wei Jiyuan got the first card, he knew that even in the end of the world, he could still live a wonderful life. Across the mountains and seas, there are strange beasts and ancestral humanoids. My cards are super rare!