In the End of the World, Will a Bomb Tied to the Heart Make It Stronger?

[Group portrait + no cp + strong woman + artificial apocalypse + space + monster fighting and upgrade + conspiracy] It's a non-traditional cool story, a growth story, a little bit sadistic, and the endings are all possible: he, be, or open-ended. With a crisp sound in the laboratory, the end of the world is coming A steady stream of high-level zombies are given to the protagonist group to gain experience, and the protagonist group continues to become stronger, but why do zombies evolve so fast, and who is behind the plan for the protagonist group to develop? A stronger survivor? Is he the one who caused this apocalypse? Or has someone figured out all the possibilities? Ruan Ye woke up in an orphanage two months before the outbreak of the apocalypse, losing his memory. He didn't know when a bomb was planted in his heart, but there seemed to be a treasure hidden in the bomb. Because of various reasons, the five people who seemed to be traveling together seemed to be accidentally arranged, and everyone had a reason to pursue. She is perfect and unlike ordinary people, she pursues freedom but is doomed to be restrained. She is a calm, decisive and strong decision-maker. A tsundere girl with a hard mouth but a soft heart. Don't listen to her words but follow her actions. She is a tsundere girl who is super capable but fails to act well. Steady and fair but paranoid, can he keep the balance in his heart when he is running for his parents? He is a man who thinks deeply and knows everything. An innocent, gentle and optimistic person, he was pushed to grow up when he woke up, and a decision was destined to wait for him. He is a funny boy who likes to pretend to be a middle-aged boy. Pessimistic, tough and careful, his wife's last wish makes his empty heart constantly look for reasons to live, and on the surface he is an optimistic and loving uncle (who is poisonous in nature). No one is born bad, but some things force good people to become bad. Partners, the world, parents, and the team are all growing and have their own growth lines.