Jeans Slasher

The Jeans Slasher (ジーンズ切り裂き魔) is the currently unnamed Valkyrie, who Kanzaki Kaori once encountered in London, England. Introduced in Toaru Majutsu no Index Light Novel Volume SS2, she is first used to ease the concept of Valkyries into the story.

Appearance
The women called the Jeans Slasher was described as about Kanzaki’s age. She is described as a beautiful woman with hair that was more silver than it was gold. She is fairly well-endowed, and with her personality allows her to seduce men with ease.

She wears a special breastplate made of an arrangement of various pieces of steel over a piece of cloth, similarly made waist armor, long gloves on both hands that reached her elbows that were decorated with a cow print for some reason, and long boots that reached her thighs that were decorated in the same way as the gloves. It can basically described as a bikini armor. She carries a broadsword on her

Personality
She has a perverted and lascivious personality, provoking men such as the Jeans Shop Owner with her appearance and charms. Although she does imply some shame about it, stating that she threw away her "humanity" just to wear it, though she says it in a teasing tone.

In conjunction with her personality, she cuts off the the jeans of men due to the fact that her goal in receiving her Einherjar is humilation play, sadism.

Background
She described her goal as wanting to use her charm to increase her Einherjar and amass as much power as a magic cabal on her own. She believes a Valkyrie should be someone who sometimes fights, sometimes dances, and contains both courage and beauty. This apparently extends to her receiving of her warriors, which is humilation play, by cutting the jeans of men. She has apparently been cutting the jeans of people for quite some time, allowing a legend and rumor to build around her actions.

It is unknown how she became a valkyrie.

Volume SS2: The First Friday of February

 * Main article:Toaru Majutsu no Index Light Novel Volume SS2

Necessarius sends Kanzaki Kaori out to investigate the Jeans Slasher, who was described as some unknown person who is cutting up the jeans of passers-by in the street. Kaori recieves information from Theodosia Electra that the slashings may have something to do with Norse Mythology.

While talking to the Jeans Shop Owner in his store she encounters the Valkyrie who cuts apart a old man's jeans outside the store. At first both Koriand the Shopkeeper were surprised by her clothing which was described by the shopkeeper as "the legendary bikini armor". Kaori criticizes her for not wearing enough with the Valkyrie retorting that Kaori's outfit wasn't much different. After talking about her purpose, Kanzaki and Valkyrie begin to fight. The Valkyrie uses Nine Support on the Shopkeeper who quickly falls for the Valkyrie's charm. Due to this Kaori knocks him away from the battle. In the end the Valkyrie says that the reason she was cutting up gentlemen's jeans was because her "specialty for the warrior’s reception is humiliation play (S-side)" increasing Kaori's desire to beat her up for being a nuisance to others.

The woman has not appeared since.

Abilities
Her sword attack was described by Kanzaki as being relatively fast and strong. She is described as being able to cut apart the jeans of people accurately without hurting them or being seen. She is also strong enough to block Kaori's attacks
 * Nine Support (九人祝い (ナインサポート) ): A spell which creates nine girls to control a man as a pawn, based on Norse mythology's importance on the number nine. It causes the user's shadow to split into nine parts. They then become much like a magic circle with the caster spinning around in the center. Afterwards the shadows disappear and re-appear as nine girls around their target. These girls then grab onto various parts of the target's body and can force him to move against his will. The higher the sexual desire of the target towards the castor the more affective the spell is.

Design evolution
Jeans Slasher's design remains static throughout the entire series, appearing only a single volume. She was designed by Haimura to look like some American macho fantasy movie more than someone from Norse mythology.

Trivia

 * She probably is one of the "self-proclaimed maidens of battle that dance around all year in a bikini like some kind of pervert" which Brunhild dislikes, because of them causing a distorted commonplace about the Valkyries.