Yamisaka Ouma

A Japanese spellcaster who wears a black suit. He uses a magical azusayumi, a crossbow that amplifies the power of his spells. He appears in Volume 5 and tries to capture Index in order to seek the contents of a Chinese spellbook in her mind and save a woman he loves who has been cursed to die. He does not appear in the anime, but does appear in the manga adaptation.

Personality
He likes to do things while causing as few casualties and as little destruction as possible. He fell in love with a girl who was cursed to die but refused to cry out for help. He originally claims to act for his own ends, but that is only because he doesn't want to blame his actions on and shift his sins to her.

His eyes are always closed except when he is in pain or experiencing some other strong emotion.

Abilities
His speciality seems to be demon exorcism as he mentions he was able to bind a lower-class demon. All his spells use wind, and most of them have "Demon" in their names. He uses an azusayumi normally used in ceremonial dances by priests and has the ability to fix damaged or distorted minds.

Spells:

 * Fuuma no Gen (Wind Demon's Bow String): Uses the bow to create a ball of wind, which is then used to fly.
 * Shouda no Den (Piercing Bullet's Bow String): Uses the bow to create a ball of wind, which is then used to blast through objects.
 * Souma no Gen (Seeking Demon's Bow String): Emits a radar to track down a target.
 * Danma no Gen (Severing Demon's Bow String): Uses the bow to fire a high-pressure blast of wind.
 * Touma no Gen (Invisible Demon's Bow String): Turns the user and those he wishes invisible.
 * Bon Dori (Lantern Festival): By setting up a barrier that's mixed with Shinto and Buddhism, he can amplify his bow's power to draw out Grimores and read minds. However, this works both ways, so his target can read his mind as well.

Quotes

 * To Index: "There's nothing a magician can't do. I became a magician so that I'd never have to experience failure and frustration again!!"
 * In his Memories: "Death is right in front of her and yet she refuses to scream for help!!"
 * To himself: "But no matter how hopeless it seemed... I just couldn't give up on her."