the scene where the warehouse caught fire "was the scariest scene in the entire film". Fellow actor Maiko also said that when she was seeing Shintaro and Marino acting like lovers, it reminded her of her "first love". Theme song The film's theme song is , and it is sung by the group . This theme song and the formation of the Snow Prince Gasshōdan group was unveiled at an animal welfare organization event on 1 November 2009. Songwriter Shinji Nojima wrote the song's lyrics. "Snow Prince" is a choral song inspired by Claude Debussy's Clair de lune, or the third movement of the Suite bergamasque. The piece "Clair de lune" is also featured in the film. The Snow Prince Gasshōdan group is a temporary boy choir that was formed specially for this movie, and it is led by actor Shintaro Morimoto. The group comes under the management of Johnny Jr., a Japanese talent agency that specially trains male idols. Snow Prince Gasshōdan is made up of 10 boys, who together, had an average age of 10.5 years at the time of the filming. This makes the group Snow Prince Gasshōdan the youngest group in the history of all the Johnny Jr. idol groups to release a single. According to the movie's release committee, the group Snow Prince Gasshōdan existed until the end of 2010 before it was disbanded. Leader Shintaro Morimoto expressed hope the group could be reunited again after 10 years. Snow Prince was recorded and released as a single album on 2 December 2009. This single debuted at the ninth position on the weekly Oricon charts, later achieving its peak of the fifth position in the same charts. Release Snow Prince had its first special screening in Flanders, Belgium, where the novel A Dog of Flanders was set. This was the first time lead actor Shintaro Morimoto traveled overseas, and he said that, "My heart was beating very fast, but seeing the audience response, I gained more confidence in this film". Morimoto became the spokesperson for the Flanders government's tourism board because he was the lead actor of the film. Snow Prince was then shown in Hawaii, where it made its film festival debut at the Hawaii International Film Festival (HIFF) on 20 October 2009. The film was then opened in Japan cinemas on 12 December 2009. It was officially released at a ceremony held at Marunouchi