Apocalypse: Surviving in the Mountains with My Younger Brother

Two male leads + apocalypse + special abilities + spatial powers + a neat freak. The romance won't take up much of the story in the later chapters.

In his previous life, he stood up for strangers and helped one ungrateful person after another.

In this life, just as he's about to repeat the same mistakes, he awakens at a critical moment. From then on, he puts his own people's lives first and never lets misplaced compassion sway him again.

In just three short years, he goes from an ordinary person with no ability to defend himself to a top spatial ability user feared by entire zombie hordes.