 Kiyokushin is a Japanese style of knock-down karate, originally founded in 1964 by Masayama. Oiyama constructed the art by combining his extensive training in Shōtokan karate and Goju Ryu karate, and cranking it up to 11. He had a tough reputation, spent over two and a half years in the mountains purely training, and established a 100-man kumite in which a karateka is challenged to take on 100 consecutive matches. Now legend has it that Masayama himself completed this challenge three days in a row, and today it remains as the ultimate achievement accomplished by only a handful of practitioners. Kiyokushin is known for full contact strikes and chop-down kicks. There is a mixture of kata from both Goju Ryu and Shōtokan, and kata that students have to learn to perform backwards. The name translates to Ultimate Truth, which is basically what you will learn if you step on the ring with one of these bad asses.