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

Summary

The protagonist feels more at ease after binding Guan Heng, suspecting Zhou Yu Hui possesses him. As midnight passes without supernatural events, they believe that as long as they prevent the first possessed from killing, they’ll be safe. However, Guan Heng urgently requests to use the bathroom, leading to a reluctant agreement to let him go with supervision. Old Song informs them that the half-demon's powers weaken with each possession, reducing the immediate danger. Suddenly, chaos ensues as Guan Heng escapes, revealing Wei Min, who had been the actual possessed one, dead in the bathroom. The realization hits that the true threat was misidentified, and they are left to grapple with the consequences.

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