I'd be more than happy if they do some lewd stuff together, but I'm more intrigued about how they are getting interrupted. Kinda hope Sakurako's rival reveals herself by appearing from under the couch.
Sure, they're going to get interrupted, but it's nice to believe that Tatsubon will illustrate 8-12 chapters of them making savage animal love to one another.
Count me in as another interested in seeing Mrs. Nikaidou's characterization.
I'm still expecting her father is a hardass mob boss who goes full basketcase when it comes to doting on his daughter (or his wife, for that matter). Sakurako doesn't want to admit she's JUST LIKE her father in that regard. Nikaidou-mama is already grooming Kageko to manage her stupid daughter. Step 1: ply her with gifts (complete?)