14 parts Ongoing Mature(This is my first fanfiction and crossover story, based on the YLIA x Love Live franchises, as well as the post-20xx Nuclear Holocausts universe, where the stories from these franchises coexist in a shared universe.)
In the Distant future, Kousei Arima has a daughter named Karina Arima after marrying his first wife which is Russian women. Karina Arima was an Kousei's long-lost daughter after her parents' divorce, which led to her exile in China. She live abroad peacefully with Chinese family for 6 years until one day she get bad day where everything she known has died and destroyed because of Nuclear Holocaust. Now, the world where she lives in aren't same, unfriendly, and unfamiliar. To survive and reunite with her family, she must do journey in the south from Hainan, then Hong Kong, and Southeast Asia first along with her surviving Chinese companions to search for clues and finds out any presences of humans and life in some parts of the world.
Will she manage it?
Warning: This is my original character (OC) story, and there will be more OCs since the main character is an OC herself.