Innocent Thing

Innocent Thing is a South Korean romance thriller centering on the complicated relationship between a high school physical education teacher and one of his students. While the teacher is married and expecting his first child, a persistent student develops an intense obsession with him. This attraction creates a conflict as the man struggles to resist her advances, eventually leading to a situation that threatens his marriage and triggers rumors throughout the school.

Directed by Kim Tae-gyun, the film followed his earlier projects Volcano High and A Millionaire's First Love. The story was written by Lee Sung-min and produced by Hong Jee-yong. The main cast features Jang Hyuk in the lead role as the teacher, Cho Bo-ah as the student, and Sun Woo-sun as his wife. The production involved 21 credited cast members and was produced by Invent Stone, Vanguard Studio, and Camp B. With a runtime of 117 minutes, the movie has received a rating of 6.5/10 on TMDB based on 77 votes.