This an OC named Kamui Shirayuki.
What she is supposed to be is not exactly clear but considering the patterns on her, she is likely supposed to ba an Ainu or something Ainu related (Think of Nakoruru or Horo Horo A.K.A. Usui_Horokeu).

http://en.wikipedia.org/wiki/Ainu_people

She looks new to me, but she's not from touhou I don't think..

konstargirl said:
She looks new to me, but she's not from touhou I don't think..

Hence OC. Original Character. Not in Touhou canon.

tehSandwich said:
This an OC named Kamui Shirayuki.
What she is supposed to be is not exactly clear but considering the patterns on her, she is likely supposed to ba an Ainu or something Ainu related (Think of Nakoruru or Horo Horo A.K.A. Usui_Horokeu).

http://en.wikipedia.org/wiki/Ainu_people

Thanks for the translation.