Iwao Shimabukuro

Iwao Shimabukuro is a former featherweight professional boxer from Okinawa, and was affiliated with the Okinawa Seaside Gym. After retiring he continued being a fisherman. He was Ippo Makunouchi's fourth challenger, whom was first to find a way to break his Dempsey Roll and was the first opponent in the Rising Saga. (Source: Hajime no Ippo)