Eighteen hands. Based upon crane techniques. Eighteen being 6×3 (colour, voice, smell, taste, touch and justice as in sanseru) and 3 representing good, bad and peace.

The name "Sepai" is derived from the Chinese characters for "18," which refers to the 18 techniques that are featured in the kata. Sepai is known for its powerful, explosive techniques and strong, stable stances. It is typically taught to intermediate or advanced students who have already mastered the basics of Goju-ryu karate and are ready to move on to more advanced training.