The episode details the history of the Gikan Ryū, a Japanese martial arts school. Its origins trace back to Uryu Hangan Gikanbo, a Daimyō who possessed exceptional martial skills.

The school's history includes connections to other schools, notably Kukishin Ryū, and its transmission involved several key figures including Akimoto Fumio Sensei before ultimately reaching Hatsumi Sensei.

The episode notes the school's secretive nature, evidenced by its concise scrolls and oral transmission of techniques.

Despite challenges such as wartime destruction and the death of key instructors, the Gikan Ryū's lineage continues to the present day.