Cool, I like the more story part! Mom needs a great deal of explanation, as does the aunt. Emma as well, though I wish we could just retcon her into a normal straightlaced student about to either A) give it up to the MC, or B) join Marcus' stable. I really hope things don't get too outrageous with the disgusting dean. I did like the hints of domme/sub with the science teacher.
But let's face it, the MC needs a big win soon. I completely disagree with all of the "anti-NTR" zealots, who refuse to understand that all consequences here are avoidable, and are based on your own not-too-subtle choices and actions. But they do have one point: the MC has yet to register a straight-up win (besides the BJs from the aunt and Maude). Ok, now that I write that, in reality that would be not too shabby, but I think the point still stands. I love the NTR side simply because it shows action. I like the whole harem idea, be it the MC or an antagonist.
Still, I like the vibe I got from .90, and I trust the new team to guide us through this adventure!