Jitta Hanaoka, born February 4, 1964, in Tokyo, Japan, is a prominent Japanese adult video (AV) actor of Korean descent, also known by his real name Yoo Gwang-seok. Active from 1989 until his retirement in 2013, he became one of Japan's top male performers, renowned for his intense, dominant style that earned him the nickname "The Beast." Hanaoka frequently portrayed rugged, authoritative characters in numerous films, contributing to the popularity of Japanese AV during his two-decade career.
A third-generation Zainichi Korean, he grew up in modest circumstances and later transitioned to working as a taxi driver after retiring from the industry. His legacy includes memorable roles and a reputation for physical prowess, making him a notable figure in adult entertainment history. Rumors of occasional post-retirement involvement persist, but his main contributions remain in the 1990s and 2000s JAV scene.