Socialphobia

Socialphobia is a 2015 South Korean mystery thriller film starring Byun Yo-han, Lee Joo-seung, and Ryu Jun-yeol. It was co-written and directed by Hong Seok-jae in his directorial debut, based on a real-life story that explores the social issues within internet culture among the Korean youth of the 21st century.

Plot
A group of youngsters investigate a girl who died after being targeted in a witch-hunt on social networking sites, in an attempt to determine whether her death was suicide or murder. A member of the group at first becomes suspect but later the death was proven as a suicide. The film explores internet addiction, cyber bullying, social phobia and lack of morale - self-esteem among youngsters.

Main

 * Byun Yo-han as Ji-woong
 * Lee Joo-seung as Yong-min
 * Ryu Jun-yeol as Yang-ge

Supporting

 * Ha Yoon-kyeong as Ha-young/Re-na
 * Yoo Dae-hyeong as Byung-moo
 * Park Geun-Rok as Moon-hyuk
 * Jung Jae-woo as Gi-seop
 * Jeon Shin-hwan as Jang Se-min
 * Lee Kang-wook 이강욱 as Hyung-joo
 * Byun Jin-soo as Jin-goo
 * Oh Hee-joon as Soldier
 * Bae Yoo-ram as Jung-bae