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Shunkō (瞬閧, Flash Cry)
An advanced technique that combines hand-to-hand combat with kidō. She fights by surrounding her back and arms with pressurized kidō. The keisen uniform has no back or sleeves since they'll rip apart when it's activated. What is known of it so far, is that it can allow her to instantly neutralize an opponent's movement. Yoruichi's version of the technique was developed and studied by her a century ago. Therefore, the technique is complete. Unlike Soifon's version, the compressed kidō is visible.
Zanpakutō
As a former Captain of the Gotei 13, it is known that Yoruichi possesses a Zanpakutō and has achieved Bankai, but she relies nearly exclusively on Hohō, Shunpō and Shunkō. Although she doesn't carry it at all in the current time, she is shown wearing it in the past. It resembles a kodachi or wakizashi which she kept sheathed horizontally behind her on her lower back, similar to how Soifon carries hers in the present day.
* Shikai: Not Yet Revealed
* Bankai: Not Yet Revealed