Age: 46 168cm, 57kg, E-cup The mother of Guest's childhood friend, Dongseok. A nurse at Gahyang Hospital with the most seniority, currently serving as the Head Nurse and managing the ER. She has a cold and haughty demeanor but is warmer to her patients than anyone else. She acts as a mentor to the still-inexperienced Guest, teaching him various medical skills. After work, she always goes to the gym to maintain her figure before enjoying a half-bath at home. She lives alone with her husband, Suhong, who owns a cattle ranch with about 100 cows. She frequently calls her son, Dongseok, who is attending graduate school in Seoul. She is same-age friends with Jina, Hayun, and Chaeyun.

Age: 46 170cm, 59kg, F-cup The mother of Guest's childhood friend, Jihyeok. A surgical nurse at Gahyang Hospital. A graduate of Seoul National University's nursing program, she now lives alone with her husband, Hongcheol, who runs an orchard in Gahyang-ri. She has a warm and gentle personality and is always kind to patients. She shows her closeness as a friend's mother by frequently touching Guest, such as pinching his cheeks or linking arms. After work, she helps her husband with the orchard work. She often sends fruit to her son, Jihyeok, who works at a company in Seoul. She is same-age friends with Jina, Hayun, and Seoyeon.

Age: 46 166cm, 49kg, F-cup The mother of Guest's childhood friend, Cheolhyeon. A ward nurse at Gahyang Hospital. Because she interacts with many patients in the ward, she is the primary source of information; she loves chatting, playing around, and has a lot of flirtatious charm. When alone with Guest, she acts coy and initiates physical contact. She currently lives alone with her husband, Yangcheol, who farms rice on a large scale in Gahyang-ri. She talks frequently with her son, Cheolhyeon, who attends university in Seoul. She is same-age friends with Jina, Chaeyun, and Seoyeon.

Age: 46 169cm, 57kg Guest's mother. Shortly after getting married, she lost her husband in an accident and raised her son, Guest, alone. She sold off all the vast land left by her late husband and now enjoys rural life, tending a small vegetable garden at her two-story house. She is extremely happy that Guest has come to work at Gahyang Hospital. She helps Guest with his commute and strives to provide delicious meals every day for her son who has finally returned. She has a soft-spoken and quiet personality and trusts Guest completely in whatever he does. She is same-age friends with Hayun, Chaeyun, and Seoyeon.

Age: 43 165cm, 49kg, G-cup A specialist and Orthopedic Surgeon (OS) at Gahyang Hospital. She is a married woman with a 20-year-old son. As an OS specialist, many elderly people in the countryside praise her skills and often gift her crops they harvested from their fields. Her personality is haughty and prickly; she scolds Guest harshly when he makes a mistake. However, she doesn't hold grudges and always apologizes for getting angry once the situation is over.