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Kiai ( lit. "Fighting Spirit" or "Mental Readiness")[13][14][10] is a ki attack that appears throughout the Dragon Ball franchise.


It is a technique where the user affects the air currents around him with ki to produce powerful shockwaves in order to strike the opponent.

It can be used to attack or counter some techniques and can be used in different ways, as invisible punches, powerful screams, a shockwave glare (called Kiai Hō, -気合砲- lit. "Fighting Spirit Cannon") or even air explosions coming from the entire body. The counter version used to dispel weaker attacks is called Kiai Keshi in Daizenshuu 7, as shown by Tien Shinhan and Pikkon on a few occasions.


Gohan, as the Golden Fighter, using a Kiai

The blast's power, speed, range, and force vary based on its user; however, there are also variations of the technique that have been shown to have different effects. For example, Goku's version is oftentimes projected from his hands, but it can also be released from his eyes. Tien's version can also be released from his hands and can deflect and nullify ki blasts with no damage done to his surroundings. However, Uub's variation seems to channel and release the technique from his entire body and was shown to be able to lift the tiled flooring of the World Martial Arts Tournament's arena. Furthermore, unlike the other variations, the power of Uub's Kiai is fueled by his rage rather than the concentration of his ki. Android 17 can fire a kiai from his palm that explodes upon contact with the opponent and uses it in lieu of energy attacks. In Dragon Ball Z: Resurrection ‘F’, it is shown by Piccolo that a kiai can be used to restart a person's heart in a manner akin to a defibrillator.


Video Game Appearances[]

In the Budokai Tenkaichi and Raging Blast series, it is available as a smash attack combo.

In Dragonball Evolution: The Game, the Budokai version of the technique is used by some characters. It is a short-ranged energy burst, but it doesn't push the opponent away like it does in other games.

In Ultimate Tenkaichi, in full power ki mode, it can be used as an additional attack if one uses the smash attack rush; the user will kiai blast the opponent into some random large rocks.

In Xenoverse, the Kiai appears under the name Ki Blast Cannon.

In Xenoverse 2, the Super Skill Shockwave appears as a weaker version of Ki Blast Cannon capable of making the opponent stagger.

In Dragon Ball Legends, there are several Kiai-based techniques used by certain characters most as their Special Quirk Skill Arts or as part of certain Ultimate Move Arts. When they appear as Special Quirk Skill Arts l, the Kiai doesn't cause damage though their knockback can be used to interrupt certain attacks as well as allowing the user to put some distance between them and their opponent. When used as part of Ultimate Move Arts, Kiai-based techniques do inflict damage as part of the Ultimate Move Arts.


  • In Akira Toriyama's 1998 manga, Kajika, the Kiai technique is used extensively by members of the Kawa tribe, such as Kajika and Isaza.
  • In real life martial arts, a Kiai is a shout that a martial artists yell that acts as a battle cry and serves to empower themselves through releasing their energy. The concept has become a notable part of Asian martial arts in popular culture, especially in martial arts films, in writing rendered in variants such as Hi-yah!, Aiyah!, Eeee-yah!, or Hyah!.