Title: Concrete (2004)
Directed by: Hiromu Nakamura
Stars: Katsuya Kobayashi, Miki Komori, Masanori Machida
Language: Japanese | Subtitles: English
Also known as: Konkurito
Description: Konkurîto: A high-school girl is kidnapped by gang lords and held captive for several months. Over this time, she repeatedly beaten, raped, and tortured.