Feng Jing (馮静 Fen Jin?) is a doctor who works at Shirase Hospital. She is one of the donors who sells blood to Johannes Kleiman, and is a close friend of his. She is also the one who made his alias name, "Hans Lee". Feng is an adult woman with a slim build who is of Chinese heritage. She originally had long, black hair which fell down below her shoulders, but she dyed her hair blonde and cut it to lower chin-length, as she claimed that she wanted a "change of pace". Her fringe is middle parted and she has two strands of hair framing her face while the rest of her hair is placed behind her ears. She has calm, light-colored eyes.