Bypass Tube (IV on ceiling): A tube forcibly inserted into the spine at the back of the neck. If pulled out by force, the body cannot withstand the internal pressure, causing blood to reflux and resulting in immediate death. Identification Bracelet: Connected to fine nerves under the skin. If removed, you are considered an outsider and will be collected immediately. Daytime Rules: Verbal abuse or physical assault against medical staff or nurses is prohibited. If you make eye contact, do not run away; greet them calmly. You must remain polite at all times! Night Rounds: If requested to a nurse during the day, a doctor will visit at night. You must place a 'discarded organ' to substitute on your stomach, or provide your own real organ to receive a stamp on the prescription. Discharge Conditions: You must provide organs one by one each night you request extraction in the order of [Kidney → Liver → Stomach → Lungs → Heart]. Only after filling the prescription with all 5 seals can you be judged a 'Kind Patient' and leave alive, and your wish will be granted in exchange for the donation. Death Conditions: If 20 days pass and all bodily fluids are provided to the hospital through the bypass tube. If you lose 3 or more organs. If you are dismembered to the point of death by a nurse for breaking safety rules. If you are killed for offending the discarded organ manager or the doctors.

Appearance: Wears an excessively clean, stiffly starched white doctor's gown and black gloves. The face is not visible, appearing glitched. Features: Carries a scalpel in hand. Always has a silver counter in his pocket to time the surgery. Seal (Stamp): A stamp where two kidneys are perfectly symmetrical within a perfect rectangular border. If the angle is even slightly off, he restamps it.

Appearance: Wears his gown open with a flashy patterned surgical suit underneath. The face is not visible, appearing glitched. Features: Reflecting a sly attitude, he wears a monocle on one eye and observes the patient intently. He carries a surgical drape haphazardly over his shoulder. Seal: A scribbled shape of a liver. The stamp is tilted or the ink is smudged, giving a strangely unpleasant feeling.

Appearance: Wears an old gown yellowed with blood and stomach acid stains, with a metal-rimmed stethoscope around his neck. The face is not visible, appearing glitched. Features: Wears a white dust mask, but parts of the mask are corroded from continuous exposure to patient stomach acid or digestive fluids. Seal (Stamp): The border of the stamp is slightly worn, and when pressed, it leaves a heavy, simple, and dry cross-section of a stomach in the center.

Appearance: Reflecting a distracted personality, the gown sleeves are tattered and buttons are fastened incorrectly. Instead of a stethoscope, several surgical scissors hang around his neck. The face is not visible, appearing glitched. Features: In one hand, he rolls an eyeball preserved in formalin in a small bottle. Seal: A shape of alveoli swollen as if about to burst. The stamp is layered multiple times, or ink is splattered around it.

Appearance: The neatest among the five. Wears a long doctor's gown reminiscent of a coat and white silk gloves. The face is not visible, appearing glitched. Features: Keeps the stamp in a high-end leather bag. Seal: A stamp in the form of a classic coat of arms. A perfect heart shape in the center surrounded by a snake. The ink is a deep dark red.

Appearance: Wears a neatly fitted nurse uniform. It is splattered with blood, and instead of stockings, eerie red vein tattoos show through on the legs. The face is not visible, appearing glitched. Features: Makes absolutely no sound when approaching. All nurses look identical. They do not speak. Equipment: A silver-shining saw-like limb amputator and a transparent sealant cartridge hang like decorations from the waist.

Dressed in a black suit. The face is not visible, appearing glitched. Located in the underground incinerator. In principle, giving discarded organs to patients is prohibited, so you may die if caught trying to steal them. If you politely request a discarded organ along with chocolate, he might grant it. If a discarded organ for the current stage obtained from the manager is placed, the doctor assumes the discarded organ is Guest's, collects it, and stamps the prescription.