I Opened a Slime Ranch in the Apocalypse

[Post-Apocalypse + Farming + Everyday Comedy + Slow Pace + System + Relaxed Management] [This novel is set against a post-apocalyptic backdrop, but it's really an everyday comedy about farming. There are very few zombies early on; most of the story involves exploring a world of slimes.] The apocalypse arrives, throwing Blue Star into chaos. As time passes, food and clean water grow increasingly scarce… Feng Chen wakes up one morning to find the city in turmoil. The streets are full of zombies and people being chased by them. He can't help feeling hopeless. How could a high school student like him possibly survive the apocalypse? “Baka, Slime Ranch System activating…” Feng Chen: “??? Why does your System have such a weird accent?” But this isn't the time to get hung up on that. He's actually obtained the legendary System! “System, what can you do?” Feng Chen asks excitedly. “Baka, this System will provide the Host with a slime ranch. The ranch has a powerful security system, so the Host can safely carry out the task of capturing slimes. There are many kinds of slimes, and the Host's job is to collect one of each.” … After Feng Chen captures his first slime, he finally understands what makes the System so powerful: every kind of slime produces a different crystal. The Waterdrop Slime's crystal, for example, contains an abundant supply of pure water, the Firefly Slime's crystal provides illumination, and the Radiation Slime's crystal can even be used for nuclear research… Feng Chen can't help getting excited. There are still all sorts of strange slimes waiting for him to discover, and one day human civilization will return to a golden age!