VIDEO: Shinkyokushin KOs

Kyokushin is a style of stand-up, bare-knuckle (no gloves), no protection, full contact/knock-down fighting.
Knockdown/bare-knuckle fighting rules: no gloves, padding or body protection; punches to the face, groin, and joint are prohibited but all bare-knuckle and elbow strikes to the body and limbs (with the exception of joints), and kicks (including kicks with the knee) against legs, arms, body, head and face are permitted, as are sweeps). – RH Marcus