Well, just played this a bit and it's come along way since the first chapter was released. The scenes are really well made. Not sure I like how the MC is portrayed though, I don't like to play the creepy mind controlling dude, and have tried playing a nice guy MC and it doesn't really work for me. I'll probably leave it for a while.
I'm not sure how this game avoided the mind control and blackmail tags. The MC has a magical corruption ability that makes the ladies fuck him. If that's not mind control, then I don't know what is. As for blackmail, just go attend class and the MC finds a naughty photo of the teacher and uses it to grope her, with the promise of more.
The game reminded me of both Milfy City and Long Live the Princess