Ringing Bell was produced by Sanrio and originally shown as a double feature alongside the US/Sanrio co-production The Mouse and his Child.[2] It is Sanrio's first anime film to have a dark plot, only two films they co-produced with Sunrise, The Ideon: A Contact and The Ideon: Be Invoked – both of which serve as the conclusion to Yoshiyuki Tomino's Space Runaway Ideon, follow suit. Like the above-mentioned Ideon films, it is among Sanrio's first works to be aimed at young adult audience members in and outside Japan.
