(other guest) Pretty sure that's Oriana Thomson from A Certain Magical Index.
Anime details: a dude with no powers in a world where most people have powers continually saves the day. He actually does have a power, the power to negate other people's powers. People are split among Science or Magic, with the Science people being further split among various groups vying for power and control over Academy City and the Magic people being split among various churches (because religion = magic) vying for power and control over the world.
Character details: she's on the magic side, but wants to help people in general. Her powers involve pre-preparing spells on paper so she's extremely versatile with her magic but also doesn't really use the same spell twice. She's also got good hand-to-hand skills and definitely knows that she's attractive and uses that to her advantage. She's shown up in two of the arcs so far over three seasons of the anime adaptation.
Anime details: a dude with no powers in a world where most people have powers continually saves the day. He actually does have a power, the power to negate other people's powers. People are split among Science or Magic, with the Science people being further split among various groups vying for power and control over Academy City and the Magic people being split among various churches (because religion = magic) vying for power and control over the world.
Character details: she's on the magic side, but wants to help people in general. Her powers involve pre-preparing spells on paper so she's extremely versatile with her magic but also doesn't really use the same spell twice. She's also got good hand-to-hand skills and definitely knows that she's attractive and uses that to her advantage. She's shown up in two of the arcs so far over three seasons of the anime adaptation.