Yua Yaiba

Yua Yaiba (刃 唯阿) is the technical advisor of A.I.M.S. who transforms into Kamen Rider Valkyrie (仮面ライダーバルキリー).

History
She is the technical advisor for A.I.M.S and was heavily involved in the development of the A.I.M.S. Shot Riser that both she and Isamu Fuwa use to transform. She also provides technical guidance and maintenance for A.I.M.S.

When Berotha Magia is wreaking havoc with corrupted Humagears, A.I.M.S. personnels are deployed to battle, among them Yua and the squad leader, Fuwa. In the midst of the battle, an impatient Fuwa breaks out the still in development ShotRiser from a case, without her permission, to destroy a Magia.

The next day, she and Fuwa are arriving in Hiden Intelligence HQ to interrogate the newly appointed CEO, Aruto Hiden about the Humagear incident at the amusement park. The CEO with his secretary Humagear easily deflects all accusation however, and their chat is interrupted by an intruder within the company building. Yua and Fuwa fight the attacking Kuehne Magia when Fuwa asked her to authorize his Shooting Wolf Progrise Key to transform, but she refuses to. Later, when Yua and A.I.M.S. personnels battles Kuehne Magia again, Fuwa arrives and forcibly transforms into Kamen Rider Vulcan. Yua then records his debut fight. The next day, she and Fuwa attend Hiden's press conference where Aruto reveals the existence of Metsuboujinrai.NET.

Super Hero Time
In the closing of Super Hero Time, Kamen Rider Valkyrie is seen posing alongside Vulcan, Zero-One and the.

Kamen Rider Battle: Ganbarizing
Kamen Rider Valkyrie, alongside Vulcan and Zero-One, will be playable characters in Kamen Rider Battle Ganbarizing.

Kamen Rider City Wars
Kamen Rider Valkyrie is a playable character alongside the other Kamen Riders. Notably, she is the first female character to be appear in this mobile game.

Personality
Yua is a professional and by-the-book agent, remaining levelheaded even in dangerous situations. She displays a great degree of cunning in her interactions with both Aruto and Isamu, manipulating both of them to suit her own ends. Underneath her brave and professional exterior, Yua shows signs of a cold and merciless personality.

Unlike Isamu, Yua harbors no hatred for HumaGears, but she sees them as mere soulless tools with no inherent value beyond their use as labor. This attitude leads her both to destroy rogue HumaGears without a moment's hesitation, and to hack into non-corrupted HumaGears without concern for their privacy or autonomy.

Yua's favorite flavor of sushi is tuna marinated in soy sauce.

Forms
Standard =

Devices

 * A.I.M.S. Shot Riser - Transformation device
 * Progrise Keys - Transformation trinkets

Relationships
Allies: Enemies:
 * Izu: Yua, being a representative of A.I.M.S., harbors hatred towards even a good HumaGear like Izu.
 * Jun Fukuzoe: TBD
 * Aruto Hiden/Kamen Rider Zero-One: TBD
 * Isamu Fuwa/Kamen Rider Vulcan: Isamu and Yua were assigned to one team to exterminate Magias. Despite their similar hatred towards the HumaGears, Isamu and Yua don't really get along well and often argue. Yua also refuses to give authorization Isamu's Shooting Wolf Progrise Key due to his reckless nature.
 * Horobi: TBD
 * Jin: TBD

Portrayal
Yua Yaiba is portrayed by Hiroe Igeta (井桁弘恵). Her suit actor is Satoshi Fujita (藤田 慧 Fujita Satoshi).

Etymology

 * Kamen Rider Valkyrie's name comes from the .224 Valkyrie, a type of ammunition used in assault rifles. Valkyrie is also the name of female warriors in Norse Mythology who fought alongside Odin.

Appearances

 * Icon-zero-one.png Kamen Rider Zero-One
 * Episode 1: I am the President and a Kamen Rider
 * Episode 2:  Is AI The Enemy? Allies?
 * Episode 3:  That Man, Sushi Chef
 * Episode 4: I Saw The Bus Guide! Anna's Truth
 * Episode 5: His Passionate Path of Manga