비밀의 교정 (2006–2006)

Modern students experience considerable stress during their school years; there is a strong focus on positive presentation and personality, as well as achieving good grades and encouraging athleticism. These demands are made without considering each student's individuality and strengths. This school-centered drama discusses the central theme outlined above and depicts the lives and relationships of six high school students— Moon Seung-jae, Oh Soo-ah, Park Doo-hyun, Cha Ah-rang, Yoon Se-in, Seo Jin-woo — each of whom has different dreams and goals which they struggle to achieve, despite trials and tribulations.