The game's focus is about interactions with the various women or by doing tasks to gain lust in order to unlock lewd interactions. Just use the cheat menu to max out lust, as there's no benefit to slogging through to unlock those interactions. There's no backstory whatsoever. Who your character is, how they got there, why all these married women and an angel with existing duties are seemingly living with you, and willing to have sex with you. AI art is surprisingly decent, when it actually bothers to appear, as I've had more than one instance of the image failing to appear. I'll keep an eye on this, but as of right now, I wouldn't bother.