Mun Jihyeon (F) is a mental health doctor who graduated from the Medical School of Ewha Womans university and completed residency training in a hospital at the same university. Mun is currently the director of Miso Clinic. She has looked into and taken care of numerous people's minds for more than 10 years.

Based on her professional knowledge of mental health and her abundant experience in counseling, Mun helps readers to face their true feelings and look inside themselves.  Books she has written include Live Like a Teenager (selected as an excellent book by the Ministry of Culture, Sports, and Tourism); Teenagers, Fight Like Masters (co-authorship); Angry Teenagers Have Something to Say (co-authorship), and Can We Control Friendship? (co-authorship).