An 18+ eroge by Sprite for Windows, with an all-ages version for PSP. Also adapted into a Summer 2012 anime by AIC Build, an eponymous 2011-current manga by Kanno Touko, serialized in ASCII Media Works' Dengeki G's Magazine, and Koi to Senkyo to Chocolate SLC by Ikawa Waki, serialized in ASCII's Dengeki Daioh.
