At Eighteen

At Eighteen follows the story of eighteen-year-old Choi Joon-woo (Ong Seong-wu), whose teenage life has been molded by his meager family life and the conflicts he faced in school. Forced to transfer schools for a violation he did not commit, he arrives at Cheonbong High School where he has decided to be a nobody: a loner just quietly riding out 11th grade. Little does he know the twists and turns and the surprises in store for his eighteen-year-old life. Soon, the loner inside Joon-woo has to come out of his comfort zone. Not only Joon-woo, but his fellow immature and inexperienced eighteen-year-olds, too, will have conflicts and whirlwinds of emotions and face the prejudices of a world shaped by the adults around them. Together, they have to live their lives to the max and make life-changing decisions. And most of all, they must not forget to cherish every moment of their lives. For all they know, the memories of their nineteenth year of life might be the sweetest, the most precious, and the most unforgettable. ==Cast==

Main • Ong Seong-wu as Choi Joon-woo • Jung Hyun-joon as child Choi Joon-woo : A student of Class 2-3 who has gotten used to being lonely and is not practiced in expressing his emotions. He is forced to transfer to Cheonbong High School for a violation he did not commit and is used to being solitary at school. Despite her opposition, she is forced to meet tutors and attend private classes and to strictly check her performance at school. She is among the few people in school who know of Joon-woo's real personality. She gradually starts to have feelings for Joon-woo. • Shin Seung-ho as Ma Hwi-young : A top student of Class 2-3 from an affluent family who seems to be courageous and strong but is suffering from a complex. He also has the habit of scratching his wrist when in distress. Due to this negative family life, he tends to see his peers as subordinate to him, a personality discovered by Joon-woo and their homeroom teacher Mr. Oh. • Kang Ki-young as Oh Han-kyeol : The homeroom teacher of Class 2-3. He is formerly an assistant homeroom teacher temporarily in charge of Class 2-3, whose official HT is hospitalized. After an incident at school, he asks the vice-principal for him to be promoted as the official HT of Class 2-3. He is a shopaholic and, as a teacher, is frequently nervous when dealing with challenges in the class. Supporting Students • Lee Seung-min as Lee Ki-tae : Class 2-3 student; So-ye's boyfriend and a part of Hwi-young's clique. He keeps himself close to Hwi-young to gain his friendship and be included in private study groups, to the extent that most would see him as Hwi-young's servant. • Moonbin as Jung Oh-je : Class 2-3 student; Joon-woo's seatmate and best friend. He is handsome, athletic, and likes to play basketball; he is Da-heen's crush. • Moon Joo-yeon as Yoon So-ye : Class 2-3 student; Ki-tae's girlfriend and one of Soo-bin's friends. She is a ballet dancer. • Choi Jae-woong as Choi Myeong-joon :Joon-woo's father. He broke up with Yeon-woo when he found out he had accidentally bore her a child (Joon-woo). He has his own family now. • Heo Young-ji as Kim Ji-min :An employee at the convenience store where Joon-woo works part-time. She usually calls Joon-woo as "Park Young-bae" (the name written on the second-hand uniform Joon-woo is using at work). She is trying hard to find a better work. :Mathematics lecturer • Lee Seung-il as Joo Hyun-jang • Jeon Jin-seo Special appearances • Song Geon-hee as Shin Jung-hoo ( 3–4) : Joon-woo's childhood friend and former schoolmate • Kang Hoon as Ma Hwi-young's older brother ( 16) == Original soundtrack ==

Part 1 Part 2 Part 3 Part 4 Part 5 Part 6 ==Viewership==