Treatment Has Begun, Patient, Please Take Your Place

[Infinite Flow + Survival + One Female Lead + No System + Supernatural Horror] Legend has it that there is a hospital. Only the chosen can enter. When you hear the sound of an unfamiliar ambulance, you'll know. It's come to take you away. Here, you must undergo countless treatments and get the director's approval before you can leave. Each treatment pulls you into a terrifying world inside the treatment room, where you'll face a horrifying experience. Zhang Tong thought that getting discharged from this hospital required approval from some department or ward. But, by chance, he obtained a doctor's ID card in one of the instances. From then on, for no reason he could understand, he gained the right to design and create terrifying instances. A fellow patient: Zhang Tong, how come you're so familiar with this place? It's almost like you created it! A fellow patient: Why is your name on this treatment form? A fellow patient: I'll bet that ghost secretly slipped Zhang Tong a bribe!!! Zhang Tong: Welcome to the terrifying instances I've designed. Line up, and come in one at a time!