There's Something Wrong with This Mental Hospital's Employee Rulebook.

Zheng Xia traveled to the wild world and practiced hard to become the supreme glutton. In the end, he traveled through the world again due to rejection from the world. When he saw the busy street and thought he was going home, he found... This is not his earth! He had no choice but to find a job as a security guard in a mental hospital. It's just that the rules in this employee handbook... If you hear crying in room 102, don't go there, there's no one in that room It is normal for water dripping in the toilet after twelve o'clock, please ignore it. If you go to the second floor in the early morning and suddenly feel suffocated, please pinch your neck for ten seconds "What is this?" "What are these rules?" Zheng Xia ignored these strange rules, so... Monitoring room: "Looks like another newcomer is coming... Hey, why is he okay?" This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.