Game Invasion: My Self-Defense Is Not Excessive, Right?

One ordinary evening, a customer who tripped over a stone at the door walked into Yu Mian's canteen. Out of boredom, she recognized this old acquaintance. The usual boning knife was pulled out from the heart, and two personality cards were slowly drawn out: One belonged to an old acquaintance of hers, and the other belonged to an alien monster. [Congratulations on getting the personality card and becoming the 29347th player in Genesis] Players from other worlds descended into the world, invaded human bodies, and brought pollution and mutations... The world gradually became something Yu Mian didn't recognize. It finally got interesting. When you stare into the abyss, the abyss stares into you. Using personality cards over and over again pushes the bond to 100%. Do you still remember who you picked up the butcher knife to protect? In the wind and rain, Yu Mian held up a knife to show off, looking up to the sky and shouting: "Who else?!" —— 1. The plot flow of the heroine and the background of the male protagonist. 2. The aliens and villains are strong, and the heroine fights for her life to upgrade and become stronger bit by bit. She is not bright and majestic, but she will save the world in the later stage.