Embusen (演武線) is a Japanese term used in martial arts like karate and judo to refer to the spot where a kata begins, as well as its line of movement. Though it is not stressed in Okinawa, nearly all Japanese-influenced kata start and end on exactly the same embusen point (Kiten). This word is also commonly romanized as enbusen.
The embusen line varies for each series of kata. It is always perpendicular to the battle line of an engagement and is the line one travels back and forth in battle. So it is, for example, a straight line for the Shōtōkan Tekki series of kata. It follows the form of a capital letter I for the Heian series of kata, as well as for the Taikyoku series. More advanced kata, such as Shotokan's Kanku-Dai and Gojūshiho Dai and Sho kata, as well as the Gōjū-ryū Seipai and Kururumfa kata, for example, have increasingly more complex embusen to train the practitioner in more advanced defensive angles and footwork. For any kata, the embusen is fixed and must be followed exactly for proper mastery of the style.
