In a world overrun by monsters, only the chosen can survive. In the year 2024, during Halloween, a catastrophic event known as “The Great Catastrophe” turns the world into a living hell, overrun by horrific monsters. Only a handful of people—those with extraordinary compatibility—are granted superhuman powers to fight back. Among them, K, an S-Rank Adaptor, serves as a loyal “dog” of the organization, battling nightmarish creatures on the front lines… until he dies in a brutal mission. But death isn’t the end for K. When he opens his eyes, he finds himself reincarnated as a baby— Four years in the past, in the year 2020, before the catastrophe ever happened. Now armed with his memories, knowledge of the future, and a second chance at life, K prepares to face the coming apocalypse head-on. This time, he won’t be just an S-Rank soldier— He’ll be the one who saves the world. [Original Webtoon](https://jp.piccoma.com/web/product/174226)

Zhao Jingyu never thought he'd be reborn, and that his fiancee is the princess who will eventually become an usurper and a tyrannical empress. He did everything he could to try to steer her life away from going down that path of evil. But it turned out that she didn't care about politics in this life at all, she just wanted to spend all her time with him? That's fine, they'll just make some babies, and she'll be too busy taking care of the kids to plan any coups. Sounds like a plan! (Source: Bilibili, translated)