The Bloodstained Bitter Melon

S1, E8: Hiiragi Shuuji, a Ministry of Health, Labour, and Welfare worker, asks the Hamatora to bring in a man manufacturing Ideal in Okinawa. Nice and Murasaki resume going undercover in Yokohamabane High School and go to Okinawa, where they are dragged into a rivalry between the school and a local high school...