Gennosuke Higaki serves as an antagonist in the *Sanshiro Sugata* storyline adapted within *Seishun Anime Zenshu*. A practitioner of karate and brother to Genzaburo Higaki, Gennosuke seeks revenge against Sanshiro Sugata following Sanshiro's defeat of Genzaburo in combat. His pursuit of vengeance drives the conflict between them, embodying the rivalry between judo and karate disciplines.
Gennosuke confronts Sanshiro in a battle on a snow-covered hillside, where Sanshiro emerges victorious. This defeat underscores the narrative's thematic focus on the clash of martial philosophies and the resolution of personal conflicts through combat. Gennosuke's role challenges the protagonist and highlights tensions between martial arts traditions.