Stick4Luck - Succubus Contract v0.24.0 7 pages
You play as a guy who turns into a girl. As the story progresses, you will learn new details about his contract. But be careful with your choices, you may miss out on some characters who know a lot more about the succubus contract than the MC.
And also, with your choices, you can control all the sexual content in the game (not counting the plot-driven scenes). Thus adjusting the entire gameplay to your own preferences.
MC (you choose his name, the default is Kris)