Abandoned in a Horror Game, Adopted by the Final Boss

Nora is a teenager who finds herself dumped inside a collapsing closed-beta horror game by the parents who were supposed to look after her. Stranded in a world built to frighten, she has to survive on her own while the ruins around her keep shifting. Her situation changes when she crosses paths with the game's final boss, a figure who should be her greatest threat. The story centers on how this unlikely pair ends up tangled together as Nora's hunger for payback grows.