Haruwo is a reckless juvenile delinquent operating within a decaying, violent, post-apocalyptic Japan. He actively battles the Yakuza, though their formidable new bouncer presents a significant obstacle. These confrontations form the core of his narrative in this setting. His story is confined exclusively to a single, self-contained 30-minute OVA created solely by Shao Guee, who handled all aspects of production including animation and music. The narrative begins and concludes with Haruwo's conflict against the Yakuza within this specific, limited timeframe.