[Atelier KAGUYA Honky-Tonk Pumpkin] Ore to Kanojo wa Shujuu na Kankei 

オレと彼女は主従なカンケイ

http://www.a-kaguya.com/products_HP/shuju/index.html
http://www.getchu.com/soft.phtml?id=463365
ore to kanojo wa shujuu na kankei