Am I who I really am?

Characters

Ferry Park: Is a personality who is the oldest one out of all of them he's 40 years old and he's aficionado for fishing and building bombs.
(Aficionados is a person who is very knowledgeable and enthusiastic about an activity, subject, or pastime.)

Cha Do Hyun: Is a warmhearted man who loves helping everyone though 11 years ago he realizes that he has been suffering from D.I.D which is Dissociative identity disorder. He's been trying desperately to hide this disorder from his families and friends, he has six other personalities.

Shin Se-Gi: Is a personality who comes out when Do Hyun is in danger or when he feels that there is violence involved. Although he is violent he would never hurt any children or woman. Se-gi endures all of Do-hyun's pain as he is the only one who remember his memories. His first love is Oh Ri-jin.

Ahn Yo-Na: Is a 17 year old girl who has a great love for idols. She overtakes Cha Do-Hyun body and mind when he undergoes a great deal of pain and mental stress and needs to endure it clandestinely. She fell in love at first sight with a character named Oh Ri-on.

Nana: Is a 7 year old little girl who has a teddy bear named Nana.

Ahn Yo-Seob: Is a personality that was created by suicidal thoughts therefore he is a suicidal personality. Yo-seob is also the twin brother of Ahn Yo-na.

Mr X: a mysterious guy (Oh Ri-jin's father).

Oh Ri-Jin: Is a character who is a first-year psychiatry resident who tries hard to maintain her seemingly perfect image to cover for her real personality. At first glance she looks elegant and genteel, but she is actually messy and short-tempered. Ri-jin then becomes Do Hyun's secret psychiatrist, and slowly falls in love with him.

Oh Ri-On: He is Ri-jin's twin brother. Ri-on often gets mistaken for a goofy simpleton, but he is actually a famous mystery novelist under the pseudonym Omega who investigates about Seungjin Family.