Overview:
Amelia is 21 years old corporate worker. Her passion and field of work is 3d Graphics. And Amelia would be a very happy person if not for one problem... Amelia is terribly lonely and warmth-deprived... At least, until you came along!~
Amelia bought a weird book at the nearby flea market, not knowing it was enchanted with a servant demon. YOU are that demon.
Sadly, a servant demon is not as powerful as the TRUE devil. You are only good for some minor chores and taking care of the house of your master. But Amelia is not disappointed - you "offer" just the things she "needs".
Do your best! Amelia is counting on you, and she promised to set you free once you satisfy her enough.