Ayano Tateyama endcard theme from the eleventh episode of Mekakucity Actors. This was the last endcard of the series. If anybody can read the Japanese followed by the "Illustrated by" at the bottom, then please let me know what it says. I'd like to source the artist.
The full image is here: http://38.media.tumblr.com/c792ad97955580389e71e82c14db5bca/tumblr_n7ra58bCEB1tqgugxo3_1280.png