What should I do if the protagonist of every world I travel to is sick?

Professor Lu Jin'an, suffering from a weak stomach, overworked and neglected his meals, leading to a stomachache that sent him into a coma one day. Perhaps his hardworking spirit caught the eye of a certain system. Upon learning that he was in the late stages of stomach cancer and facing a life worse than death, he signed the contract without even hearing what the job description was. Don't ask! The answer is that he's not afraid of death, but he's truly afraid of pain. Besides, work doesn't matter where he works, and he's going to die anyway, so why not live it to the fullest? (At least he can be a bit of a jerk at work, right?) Until... after realizing that every assignment target is insane, Lu Jin'an held his forehead and smiled bitterly. What kind of script is this... White Moonlight System...