Lee Sun-woo is a school teacher who joins Cha Young-jin in trying to protect youths whose lives might have changed with responsible adults around them. He teaches at Go Eun-ho's school, which has close connections to a church and religious cult, linking him to the wider danger surrounding the boy.
A young man with Lou Gehrig's disease who uses a wheelchair and is the central figure in the story. After learning that his condition is terminal, he tells his best friends that he wants to have sex for the first and last time. His illness and wish prompt his friends to try to create a happy memory for him.
A high school student caught between poverty, family conflict, and uncertainty about his future. He practices Ssireum in hopes of winning a scholarship and paying for surgery. With Coach's training and support from his teammates, he gains confidence, advances to the national competition final, and learns to face his future without hating himself.
Ra-hee's boyfriend, whom she sees at the airport near the end of the film. She sends him off before receiving a tip about a possible entertainment scoop. Although their airport farewell briefly interrupts the journalistic storyline, Ra-hee immediately rushes away to pursue the new lead.
Joon-suk is Lee Gang-Sik's eighteen-year-old son, whom he has not seen since the boy was three. Forced to mature early, he cares for his elderly grandmother with dementia and initially views his father as a stranger and criminal. During their single night together, his guarded heart gradually opens.
A restaurant delivery boy who is brought to Yongsan police station for questioning after the expressway pile-up. He joins the people already gathered there, who learn that a memory stick left by the dead quiz-question setter contains the answer to the next show's notoriously difficult final question.
Ryu Deok-hwan has 31 screen credits in a career dating back to 2002. Signature works include Nobody Knows, Heavenly Ever After, The Last Ride. Explore the interactive character relationship maps on each title page to trace how their roles connect across franchises.