The kata is a series of techniques performed in a vacuum simulating a real fight.

Movements performed in kata alone can then be implemented with a partner. These exercises are called bunkaï.

The goal of the kata is twofold:
- On the one hand make work gestures, postures ... in given situations, to have a learning "quiet" and more applied than during a fight.
- On the other hand to discover fundamental principles of martial arts, such as distance management, attitude and management of balance, coordination of movements.