Daitō-ryū Aiki-jūjutsu
Also known as Goshin Jitsu, the specific self-defense techniques of the style draw much of their techniques and tactics from Mas Oyama's study of Daitō-ryū Aiki-jūjutsu under Yoshida Kotaro. These techniques were never built into the formal grading system, and as karate itself grew increasingly sport-oriented, the self-defense training started to fall into obscurity. Today it is only practiced in a limited number of dojos. However, the proper Kyokushin Karate techniques are extremely effective when it comes to self-defense in any type of fight due to its full body contact fighting style.