I'm Working as a Sleep Tester in a Haunted House.

Summary

In an abandoned factory, a group encounters a ghostly security guard who saves them from a mysterious black shadow. The ghost, who died heroically saving colleagues in a previous fire, is revealed through a memorial photo in a dusty security booth. Despite being deceased, the spirit continues to protect others. The story highlights the theme that good people, though not always rewarded in life, are remembered and can continue to do good even after death. The protagonists are left shocked and grateful for the ghost's intervention.

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