In 2011, Ikeido Jun won the Naoki Prize for his novel Shitamachi roketto (Downtown Rocket). In 2015, TBS broadcast it as a drama. Teikoku Heavy Industries, Japan’s largest aerospace maker in the story, offers the small manufacturer Tsukuda Seisakusho two billion yen for a patent.
In the episode of November 1, 2015, Tsukuda does not sell the patent. Instead, it proposes to do business by supplying the parts.