Definitely an ambitious game with a decent story but...
it's advertised as a game about corrupting your friend's mom and it's not that.
It's not good to shift genres like that. The last week and the ending are very unsatisfying, because they just stop being erotic.
It also goes from maledom to femdom during the last week as well, which turned me off a bit because I'm not really into that.
All in all, it's a decent story but it's the wrong story to be telling here.