(Invincible + Zombies + Multiple Heroines + Stockpiling Supplies + Survival Base)
The protagonist was once a carefree rich kid who spent every day lazing around. Then, by chance, he obtained a System. It told him that the Apocalypse was coming and that the Host should prepare. Endless disasters were about to descend upon the world: zombies, floods, freezing temperatures, volcanic eruptions, and more.
