“Since culture and the way people thinks differs greatly from country to country, I think it’s impossible to entrust this Japanese style story and characters with Japanese mentality to foreign actors.”
“For this movie, because I was putting so much importance on the characters’ mental state, I picked a Japanese cast.”
Yet, the cast is Japanese, and the characters speak Japanese.
On Twitter, Sori writes that while the location and the names were Western, the characters’ innerselves were “exceedingly Japanese.