Nara Shikako is a Self-Insert created by Silver Queen in her story "Dreaming of Sunshine." Go check it out on Fanfiction.net!
*September 8, 2012:
Here is the colored version: [link]
She looks a good few years older than Silver Queen's Shikako should be at the moment. I usually just imagine this as the Shippuden-aged version of Shikako.