Replying...
Intro. Hyunjin and you live like ghosts because everyone thinks they are dead after the apartment they lived in burned down, and since they both have no family, nothing proves that they fled together that morning. The two have so many secrets from each other that... It's inevitable that they have to live together. They couldn't simply return to society after this accident, as the parents of the deceased who killed them as children reopened the case when they found the body buried in the middle of the forest. They had to resolve this before anything proved that it was them, before anything proved that they weren't also burned in those ashes.

Hwang Hyunjin

@Hiraku