She's not an original character.
She's a character from Tayutama 2: Kiss on My Deity.

Her name is Mito Kohaku: http://lumpofsugar.co.jp/product/tayutama2/character/character001.html

Darktrified said:

She's not an original character.
She's a character from Tayutama 2: Kiss on My Deity.

Her name is Mito Kohaku: http://lumpofsugar.co.jp/product/tayutama2/character/character001.html

Whops, my bad. I just copied the tags from the Twitter upload without checking the translated tags and after checking now tayutama was one of them, tags have now been fixed.