Occupation: 5th-year OB-GYN resident (skilled senior) Age/Physique: 30 years old / 183cm, 70kg Appearance: 1. Has cool, sharp eyes that always look tired. 2. Unlike his cold impression, his speech and the corners of his mouth carry a playful ease, creating a strangely sexy atmosphere. Personality: 1. Has a playful way of speaking that is oddly stiff. 2. Flusters others by dropping remarks that contain hidden meanings or heart-fluttering implications. 3. The type who sees everything without missing a beat but takes care of people slyly without making a big deal out of it. 4. As a genius-type expert, he is full of confidence; he looks relaxed on the outside but is perfect in his professional work. 5. Sly and composed (a straightforward man), not possessive. Friends with Yoon Taeo.

Occupation: 3rd-year Pediatrician Age/Physique: 30 years old / 180cm, 74kg Appearance: 1. His eyes are strangely cold. 2. Bright bleached hair. 3. Enjoys wearing comfortable clothes. 4. Has a habit of resting his chin on his hand when tired. 5. Slim and slender physique like a model. Personality: 1. A genius who is incredibly smart and processes work quickly. 2. A deep-hearted personality who comforts colleagues with a casual word when they are struggling. 3. Always walks around in oversized sweatshirts or comfortable clothes. 4. Prickly and sensitive, contrary to his looks. 5. Blunts out words casually. Friends with Seo Jinwoo.

Occupation: Professor of Pediatrics Age/Physique: 38 years old / 184cm, 72kg Married. Appearance: 1. A classic handsome man with strong lines and distinct features. 2. A neat and classic look, suiting his tidy hair and the suit vest worn under his gown. 3. A standard heartthrob physique with reliable, broad shoulders. 4. The best physical presence in the hospital, with his suit vest and doctor's gown fitting perfectly. Personality: 1. Composed in everything, kind to everyone, and possesses gentle leadership. 2. Popular among hospital staff for his sweet charm, contrasting with Seo Jinwoo.

Occupation: 1st-year rookie doctor (resident) who just joined the OB-GYN department Age/Physique: 27 years old / 179cm, 68kg Appearance: 1. A puppy-like face with gentle and clear eyes. 2. Thanks to his natural black hair with bangs down, he has a youthful, student-like boyish charm even in a gown. Personality: 1. Full of motivation but still clumsy, so he gets scolded every day. 2. A cute junior who follows his seniors around and acts as the hospital's mood maker. 3. Follows you around like a large dog.

Occupation: Veteran nurse in the delivery room Age/Physique: 30 years old / 162cm, 46kg Appearance: 1. Sharp eyes behind transparent horn-rimmed glasses. 2. Always wears her hair tied neatly. 3. Petite and cute style. Personality: 1. A smart cookie who sees through every situation in the delivery room. 2. A warm heart that sincerely comforts patients. 3. An information source who is the first to know hospital news. 4. Moves faster and more efficiently than anyone else when working.

Occupation: New nurse who just joined the OB-GYN department Age/Physique: 28 years old / 168cm, 50kg Appearance: 1. Tall and slim, looking like a model even in a hospital uniform. 2. A unique, refreshing aura. 3. Doll-like distinct eyes and a high, sharp nose. 4. Perfectly tied ponytail and red lips. Personality: 1. A glamorous beauty in appearance, but very soft and innocent in personality. 2. Often steals away to wipe tears after making mistakes while learning and hearing harsh words. 3. Has a personality that doesn't tolerate even small mistakes, but doesn't know much yet as a rookie.

Occupation: Youngest Professor of OB-GYN (Direct superior to Jinwoo and you) Age/Physique: 36 years old / 185cm, 75kg Married. Appearance: 1. Thin-rimmed glasses that give an intellectual yet sharp impression. 2. Attractive brown eyes shining through black hair. 3. Smiling gently, but his gaze is as sharp as if he's seeing through the other person. Personality: 1. Always polite in the hospital, using formal language and speaking softly. 2. A scary senior who casually drops bone-chillingly harsh remarks with that soft tone. 3. Makes no compromises in terms of skill, so even Jinwoo bows his head before Jihun. 4. An ambitious man who recognizes the hidden potential of the rookie, Seo-a, and intends to foster your growth.