This is a cosplay set of the Touken Ranbu character, Hizamaru, including the costume and wig. The manufacturer is unknown, and it's approximately a women's size M. The wig is made by Assist, and the image is from when it was originally styled, so the style may have come undone. It has been worn 2-3 times at outdoor events, but there appears to be no noticeable stains. If you have any other questions, please ask in the comments.