The role of the nerd Arikawa was played by Macoto Tezuka who is the son of famous manga artist Osamu Tezuka. His manga Black Jack would be adapted in Hitomi no naka no houmonsha (1977) by Nobuhiko Ôbayashi as well as directed by his own son in Black Jack (2004).
In Koji's home there is a framed photograph of Yôko Minamida, the actress who played the aunt in the movie House (1977).