Hiromasa Ougikubo Japanese: 扇久保博正 (born 1 April 1987) is a Japanese mixed martial artist currently competing as a flyweight in the Rizin Fighting Federation. A professional since 2006, he has also competed for Shooto, Vale Tudo Japan, and The Ultimate Fighter. He is the former Shooto World Bantamweight (123 lb) Champion, a former Shooto Featherweight Champion and the 2014 Vale Tudo Japan flyweight tournament champion. As an amateur, he was the 12th All Japan Amateur Shooto Featherweight tournament champion and the 4th Tohoku Amateur Shooto Open Tournament champion.