i have a great idea for a graphic novel

The apocalypse arrived and the humans slowly adapted to the extreme environment. After the apocalypse, Su Jiyai’s life becomes more miserable at her foster parent’s house. Her foster mother kept finding ways to sell her, her cousins wanted to kill her to reduce the burden, and her foster dad tried to take advantage of her. However, it was the moment when her foster parents pushed her to get admitted to the Army instead of their biological daughter, that she left the home and severed her ties with them. When she was admitted into the Army, she fought with zombies with her bare hands as she had no superpowers. Just when Su Jiayi was fighting with the zombies near a mysterious place and was sure she would die, she accidentally triggered a system and became the owner of that mysterious place. Not only did she have a safe place to stay, but she also had a super amazing system that allowed her to multiply the things she obtained from Deminsion Hunting. [Ding! Vending Machine Detected! Congratulations to the host for obtaining the Vending Machine X ∞! The Host can start buying Vending Machines for 200 Federal Coins] [Ding! A Deluxe Room Detected! Congratulations to the host for obtaining Deluxe Room X ∞! The Host can start buying Deluxe Room for 10000 Federal Coins] She opened her own residential area and grocery store. Her grocery store and the rental house soon became an instant hit and people from different places came to please her. As her business was growing, her foster parents came begging her but she just kicked them out. Oh! And wasn’t that the captain of Willow Army whom she had a crush on? Why is he looking at her as a lost treasure when he doesn’t even know her real identity… The story will be fast-paced for the first 19 chapters. The main plot will start after 20 chapters.