Please help me with my research so I can use it to save mankind.
It's probably an edit - I saw the background in several Ren'Py games, but only that one pic with the girl.
And even in a wallpaper with Saber.
The character is Ayame by Mikan aka skimlines at deviantart, contained in the "Novelty" visual novel maker.
http://www.visualnovelty.com/about.html
http://skimlines.deviantart.com
My dreams have been broken...