Witch Trainer Silver by Silver Studio Games

Witch Trainer Silver is a free and open-source adult visual novel with point-and-click adventure elements. The project is in active development, and receives regular updates, adding to the dozens of hours of content already available. Let’s get straight into the story:
Through time-travel mumbo-jumbo and some magical shenanigans, you find yourself stuck in a body of the most powerful wizard in the universe, known as Albin Dumbledork! Or something... But that's not important. You find out the castle you got yourself stuck in has dozens of hot chicks, all waiting for you to make your move! Except there's one problem, before you became a super powerful wizard, you were a Genie, and that's a totally different profession I'll have you know! With absolutely no idea how that foreign magic of theirs works it is up to you to find out, or not.
Will you get with the program and learn how to make some magic happen one way or the other? Or will you refuse and end up being a loner for the rest of the time you are stuck here? Either way, it's going to be a wild ride, full of drama, laughter, and lots of naughty bits.

It seems the person you are impersonating used to be a headmaster of a rather famous magical college, and best of all, the students are sexy as hell! Where would the harm be in using your cosmic powers to help seduce these fine young women?

There's just one teeny tiney, insey winsey problem standing in your way. You're unable to call upon those phenomenal universe-rending powers, and you don't know why! Thankfully, you're able to make a friend, Snivelling Snapdragon, who is willing to help you adjust to your new environment. Of course, nothing comes free, as he asks if you're willing to help him tear down a certain stuck up witch who has been proving to be a bother. Well, it's not like you have anything better to do today, and maybe you could convince her to gaze into your crystal balls.
Get your wand at the ready, it's time to make some real magic!