Director Seo Eun-young’s New Film ‘Classroom of Delusion’ Set for December Release; Chilling Teaser Poster and Trailer Unveiled

The film 〈Classroom of Delusion〉 announced on November 9 that it will open in December.

〈Classroom of Delusion〉 tells the story of people piecing together fragmented memories of Jung Hae-seong (Kwon Yong-geun), the boy at the center of a bombing at school. The film made headlines after winning three awards at the 2025 29th Bucheon International Fantastic Film Festival: the Actor Award, the NH Nonghyup Distribution Support Award and the Watcha’s Spotlight Award for Feature Film.

The newly released teaser poster shows Hae-seong, his face hidden, revealing a bomb inside his bag. Set against a red backdrop and a classroom, it features the line “Want to solve it?”—a chilling image that sends a shiver down viewers’ spines. The teaser trailer also shows the scene of the incident caused by Hae-seong, along with his homeroom teacher, Jae-geon (Park Jong-hwan), and Jae-geon’s lawyer, Yeo-jin (Han Hae-in), further deepening the mystery.

〈Classroom of Delusion〉, the latest film from director Seo Eun-young, whose credits include 〈Overman〉, 〈Confession〉 and 〈Ditto〉, will be in theaters this December.