To Survive in the Apocalypse, I Have Both a Cat and a Dog

Many protagonists in apocalyptic stories keep pets. At first, I thought they were lone rangers. Later, they saw the heroine helping soldiers, exposing her space, and helping out for free when she arrived at the base. The only requirement was to protect the heroine until the end of the apocalypse. To be honest, the heroine is a good choice. I don't know how old the heroine was before she traveled through time. She feels that she is still quite young in her work. Her personality is a bit innocent and lively. Personally, I feel like it. If you like this kind of novel, you can read it...