Gukoroku: Traces of Sin

Movie: Gukoroku: Traces of Sin (English title) / Record of Folly (literal title)
Romaji: Gukoroku
Japanese: 愚行録
Director: Kei Ishikawa
Writer: Tokuro Nukui (novel), Kosuke Mukai
Producer: Makoto Kakurai
Cinematographer: Piotr Niemyjski
World Premiere: September 6, 2016 (Venice Film Festival)
Release Date: February 18, 2017
Runtime: 120 min.
Genre: Mystery / Drama
Distributor: Warner Bros., Office Kitano
Language: Japanese
Country: Japan

Plot
An elite salary man, his wife and and their child are murdered by an unknown assailant. The case initially made the headlines, but it is now an unsolved case.

One year later, Tanaka (Satoshi Tsumabuki) begins to cover the unsolved murder case. He is a reporter for a weekly magazine. Through an interview with someone who knew the murdered couple, Tanaka learns the murdered couple was far from the ideal couple that they appeared. The truth of the case begins to appear.

Cast
Satoshi Tsumabuki
Hikari Mitsushima
Keisuke Koide
Asami Usuda
Yui Ichikawa
Wakana Matsumoto
Tomoya Nakamura
Hidekazu Mashima
Mari Hamada
Mitsuru Hirata