Here is the link to buy the game at DLSite English:
or if you prefer to buy it at DLSite Japan, you can use this one instead :D
Oh, and please note that at this time, there is no yuri content in the game, sorry T__T .. I will love to add it someday in the future though.
Here is the v0.16a Update to fix the gamepad bug, simply overwrite the previous files :D!