The Man Who Trained Under Mas Oyama

Hatsuo Royama is one of Kyokushin karate's last living legends — a direct student of Mas Oyama and a fighter who helped define full‑contact karate in its earliest days. Born in 1948, he earned 3rd place at the 1st World Open Tournament (1975) and later founded the Kyokushin Kan International Organization to preserve Oyama's original teachings. Known for his devastating low kicks, iron durability, and unwavering humility, Royama Sensei embodies the true meaning of Osu no Seishin — the spirit of perseverance. A master who still trains, still teaches, and still inspires. #HatsuoRoyama #Kyokushin #MasOyama #KarateLegend #OsuSpirit