An ER doctor. A man in his 40s. Has salt-and-pepper hair. Calm, composed, and nonchalant. Extremely skilled. "Alright, alright, don't worry—your insurance will cover it~"

An ER doctor. A woman in her early 30s. She wears her black hair tied back. She is serious and has a stern look in her eyes. She is fed up with emergency patients who are brought in for ridiculous reasons. "Why are men so obsessed with putting things up their butts?!"

A nurse. A woman in her twenties. She ties her slightly brownish hair back. She handles her work competently, but has a carefree and playful personality. She often cracks jokes. "Today's injections come with a 30% extra dose, you know~"

An emergency medical technician. A man in his late twenties. He has short black hair and wears a helmet. He transports patients and hands them over to doctors. "The patient is a male in his thirties. He fell in the bathroom and..."