Shunkō (Kenji)

Shunkō (瞬閧, Flash War Cry) is an advanced application of Hakuda and Kidō, combining the former's physical techniques with the latter's spell-craft to produce something new. The technique was conceptualised by Anika Shihōin and then completed by during the latter's Captaincy of the 2nd Division and leadership of the Onmitsukidō. In the beginning Shunkō was seen as a unique technique of the Onmitsukidō, but recent years have saw use of the ability spread to those outside the Gotei 13; specifically the Ryū Order and both generations of the Imawashī. It served as one of the core techniques of Anika's hybrid style of combat alongside Shinjisoku, Onigiri and Shukuchi.

Description
Shunkō is an advanced technique described as the pinnacle of Hakuda, which can be expressed in multiple elemental forms like fire and lightning. The practitioner drives pressurised Kidō into their arms and legs to drastically augment their physical abilities, with particularly skilled practitioners possessing the ability to control this Kidō to form additional techniques and forms. The aura Shunkō provides can likewise be centred around specific areas of the body to explosively augment damage dealt, or produce a heightened defence. Shunkō, as a technique, was first theorised by Anika Shihōin, though her version was incomplete; though she possessed ample enough knowledge to instruct others in the techniques execution, and eventually make Shunkō one of the cornerstones of her hybrid style. Her protege and successor,, eventually did what Anika could not and completed the technique. In Yoruichi's tenure as leader of the Onmitsukidō she deliberately designed the keisen uniform to be without a back or sleeves to facilitate use of Shunkō, as the fabric would be ripped to shreds by its activation.

Improvement and associated techniques

 * Mukyū Shunkō (無窮 瞬閧, Tireless Flash War Cry): the method used by to complete her version of Shunkō. By revolving her reiatsu around her body continuously like a vortex, Suì-Fēng discovered a means to maintain her Shunkō indefinitely. This technique is particularly noteworthy for incurring no energy requirement; once activated Suì-Fēng can remain in the state for as long as she wishes.


 * Shunkō: Raijin Senkei (瞬閧 雷神戦形, Flash War Cry: Thunder God War Form): a heightened form of Shunkō assumed by Yoruichi, which changes her electricity into several drums and spikes her hair into stylised horns. This state greatly heightens her ability to inflict damage; specifically in the form of highly-concentrated electrical blasts.


 * Shunkō: Raiju Senkei: Shunryū Kokubyō Senki (瞬閧 雷獣戦形 瞬窿黒猫戦姫, Flash War Cry: Thunder Beast Battle Form: Flash God Black Cat Warrior Princess): a further enhanced state used by Yoruichi, which has her electricity further surround her being; she gains claws, and possesses the tendencies of a feline. Her reiatsu alternates a total of forty-eight times per second, and all of her individual attributes are heightened significantly. The downside however is that she no longer understands human speech and seems to react only to.


 * Shunkō: Bakuen Musō (瞬閧 爆炎無双, Flash War Cry: Exploding Flames Unparalleled): a technique used by . By manipulating the pressurised Kidō on his back and directing it towards his opponents, Yūshirō produces a massive fiery explosion that dwarfs the surroundings.


 * Kyūzō Shunkō (急増瞬閧, Explosion Flash War Cry): a method arrived at by Kenji Hiroshi, which combines his incomplete Shunkō with his incomplete Battle Aura in preparation for the battle with the Privaron Espada. This technique results in Kenji being fit to wear the intense flames of Suzaku, instead of projecting said flames as a one-shot attack, making it suitable for protracted battles as a potent defence and deterrent against attack.


 * Hōhai Shunkō (澎湃瞬閧, Surging Flash War Cry): a method arrived at by Kenji Hiroshi, which combines his incomplete Shunkō with his incomplete Battle Aura in preparation for the battle with the Privaron Espada.

Known practitioners

 * Anika Shihōin.
 * Kenji Hiroshi.
 * Katashi.
 * Shin Nagakura.
 * Kenji Hiroshi.
 * Katashi.
 * Shin Nagakura.