I played the demo. In short, really good game. The detailed art is amazing, and the sounds are a bonus. There is a lot of potential, and I'll be looking forward to any updates.
The plot is very simple: our protagonist has a debt and is forced to pay it back by performing fellatio (and some rimming, but it's not implemented yet).
Currently, the game has one H-scene, but I'd say you should give it a try. The game is very short (it's a demo after all). There isn't much to talk about, so let's talk about the (future) gameplay.
It is implied that there will be at least three ways to tackle the situation: escape, resist, or submit. It is not mentioned directly, but I assume that refusing to do as you are told will have its consequences. Also, if you decide to submit, you can choose how the protagonist reacts/feels, which I consider to be a nice touch.
Recommended (even if it is just a demo).