[3] The director, Tatsuya Mori, first learned of this incident through a small newspaper article about a movement to establish a memorial to the victims.

The contemporary president of the neighborhood association that the victims came from speculated that the six surviving members may have avoided speaking out about the incident, as they felt that they would have been ignored as burakumin.

However, the president also expressed apprehension about the film, and said "Digging up the incident might lead to younger generations experiencing discrimination against our community once again.

In spite of this, well-known actors, including Rena Tanaka and Arata Iura, ended up appearing in the film.

Tanaka stated that she was motivated to participate in the film due to parallels that she felt between the murders and events in the contemporary Russian invasion of Ukraine.