The game is 90% off until August 31! The developer wanted to put a 10% reduction and obviously made a wrong manipulation. He's trying to fix that with dlsite right now.
If you want to support the developer for a low cost, now is the time!
You must be registered to see the links
From what I have read on ci-en, the developer is thinking of making a sequel to the game, or else making another one in the same genre (I'm never sure what is written when I translate the japanese with google translation...).
You must be registered to see the links
Edit: looks like dlsite corrected the mistake, the game is now 10% off.