Wankan
Wankan is a kata practiced in many styles of Karate. Not much is known about the history of this kata. It originates from the Tomari-te school and in modern karate is practiced in Shorin-ryu, Shito-ryu, Shotokan, Genseiryu and Matsubayashi-ryu.
It is often considered an advanced kata, despite its brevity. Karate master Shoshin Nagamine considered wankan to be his favorite kata. A quote from his book describes the kata as "Being characterized by unitary sequences of attack and defense".
Wankan is also known as Matsukaze in some schools of karate.
