Her name is ζε₯γͺγͺ but I don't know where she's from. Looks like it's one of those idol games or something.
Added char name and copyright. Chou idol densetsu Oomori Anko, it`s the second art on danbooru, but I have no idea that it is. Anyway this girl has Taketatsu Ayana as seiyuu and I like it.