Bro, I’m So Hungry

[Zombie apocalypse + no System + younger sister + (you tell me if it's wish fulfillment) + no supernatural powers] I originally meant to publish this as a short story, but short stories can't be found through search. This is probably my first book. I hope all you wonderful readers will finish this not-too-long story and share your thoughts. The next one will be better. A black rain disrupts the peaceful life of Huacheng. Li Le'an, who has gone to bring his younger sister home, discovers something strange about the rainwater. The black rain transforms the world: the dead walk, and survivors go mad... Will Li Le'an and his younger sister, Li Xinyue, live long enough to be rescued...