Seiken

*"SEIKEN!"*
—Summoning Phrase
The **Seiken** (**聖剣**) is an elemental technique of the Shiro family.

## History

The Seiken was developed by Isaki Shiro in 17th century Japan, but it is unknown how he did this. It could presumably be a manifestation of chi, the energy of life itself, blended with the element of air. Isaki's ninja nature would have him envision the Seiken to be a ninja blade of wind.

This ability would be passed down for centuries within the Shiro family to the first son of each generation. However, Lance White's biological son, David White would go on to inherit the Arashiken variant of the Seiken, while Lance's adoptive son, Jason Kade would innately learn to use the Seiken.

## Capabilities

In total, the Seiken itself is an invisible gust of wind, acclaimed to be in the formation of a jabbing blade, that can be unleashed through the palm of a hand upon summoning the phrase by name. Due to its inability to be seen, a Seiken blast can rarely be dodged, and it is also unable to be blocked. The blade is sharp enough to tear through organisms and dense materials.

Using the Seiken requires a great amount of skill, energy, and focus. For one such as Lance White, a man with a completely unfettered-focused mind, he can use it up to five times a day. Jason Kade admitted that unleashing the Seiken is exhausting, even for someone of his physical condition.

## Variations

### Dākuken (ダーク剣)

The Nakamuras' variant of the Seiken, Dākuken is a dark gust in the shape of a blade, that not only does damage to the target, but any technology around it, similarly to an EMP. This will disable any new-age technologies that the target has at their disposal, but also if in a electrically lit room, power will go down. This is very useful for stealth missions.

### Kageken (影剣)

The Shadow creature variant of the Seiken, developed by Ankou. This engulfs the target in darkness, and can send them into a paralysis no known entity has found a cure yet, so this is incredibly strong. Strange enough, it has been known to not effect some people who know Seiken.

### Akaiken (赤い剣)

The Earth-2 variant of the Seiken, used by the Kuro family. Javelin Black uses the Akaiken, a fiery chi blast against his enemies at the same capacity Lance White uses the Seiken. The technique is also shortened to simply "Kaiken."

### Arashiken (嵐剣)

The weather variant of the Seiken, used by David White. Upon summoning, the user can engulf a target in a dark gray cloud and attract a breakneck bolt of lightning.

### Seishin no Ken (精神の剣)

The ultimate variant of the Seiken, used only by Lance White because he created it. The technique is at least 50 times more powerful than the standard Seiken, capable of penetrating incredibly strong creatures and blowing away countless enemies. If used correctly, it can bust some of the strongest materials known, such as Tritanium.

### Kamaitachi (かまいたち)

Jason created the Kamaitachi variant of the Seiken, in which he expels several, smaller blasts of razor wind in rapid succession.

## Users

* Isaki Shiro (Seiken)
* Lance White/Argent (Seiken, Seishin No Ken)
* David White (Arashiken)
* Cody Nakamura/Ghost (Dākuken)
* Ankou (Kageken)
* Javelin Black (Akaiken)
* Jason Kade/Almanac (Seiken, Kamaitachi)
* Rath (Seiken)
* Deus Rex (Seiken, copied)

## Translations

* Seiken - "Holy Sword"
* Kageken - "Shadow Sword"
* Dākuken - "Dark Sword"
* Akaiken - "Red Sword"
* Arashiken - "Storm Sword"
* Seishin no Ken - "Sword of Spirit"/"Spirit Sword"/"Spiritual Sword"
* Kamaitachi - "Whirlwind Slice"/"Wind Scythe"/"Sickle Weasel"

## Trivia

* The Seiken is also a straight punch from karate.
* The Kaiken is also a Japanese dagger (懐剣).