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
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!