Interstellar: Even Among the Stars, a Medical Student Has It This Rough

After medical student Si Li'an dies suddenly, she transmigrates into an interstellar beast world as an F-rank useless Guide. While others use mental power to soothe Sentinels, she uses a scalpel: locating injuries through spinal percussion, stimulating glands with acupuncture, and dissecting alien beasts to make medicine. Later, when an SSS-rank Sentinel begs her for guidance, she tells him to take a number and wait in line. The king of the interstellar pirates kidnaps her to be his personal doctor, but three days later he sends her back of his own accord, along with a shipload of supplies. The entire interstellar world says she's a useless nobody who made a comeback. Without even looking up as she wipes her scalpel, she says, "I'm just a doctor."