Nice job, dude. Just tried it out and it seems like something that could be great given enough time, the models are nice and the story is serviceable.
After playing with it for a bit, some of the things that I would suggest would be:
Finish stuff before actually putting it in the game, else it gives a really sloppy feel to it. It doesn't mean you shouldn't release anything until 1.0 is done, but some stuff like how the mom having all three events unlocked from the start, as long as you have enough power to do it, but nothing changing no matter which one you do (it doesn't unlock new positions, doesn't change her clothes/personality or even how she reacts to you in other events) gives off bad impressions to the player.
Try and make it so the characters have some sort of schedule (be it randomized or not) so you meet and interact with them at various places depending on day/time instead of always doing the same thing at a certain place and time, it's gonna take some work but it will pay off a lot in making the characters feel more like characters and less like a bunch of task lists (ex: so far I always sleeped at mornings so I could interact with either mom or Nanami and the I slept the rest of the day so I could repeat it on the next one, it just felt like I was completing some task list for a robot instead of interacting with some characters in a world).
Make it so you get some functional reward besides the eyecandy when you corrupt someone, be it with new positions or a way to get power without spending money (maybe you already did it and I just haven't met the character yet, if that's the case, ignore this point).
Explain what exactly the stat points do and how they should affect a character (ex: each 50 points or so into corruption you should see a change in the character's personality, if it doesn't happen the corruption score will be locked until you complete the other story-based pre-requisite), because after grinding a bit of love and corruption for the mom I just felt like I wasted my time, nothing seemed to change besides numbers going up. Right now it feels like the game has no actual mechanics and the numbers are just there for show.
Progression with Nanami and mom (the two characters that I tested so far) felt way too fast, I'm guessing it's probably intended that way, but slowing it down a bit might do some good in making their transformation feel more impactful.
Long events are nice, but having some shorter repeatable interactions would come a long way in making the game feel more alive while showing how far you corrupted the characters.
I think that's all I had to suggest, but anyway, good luck onthe project.
Here's hoping all goes well and also that more anal scenes are added to it in the future.