I only got to this now and I like it, even though there are some problems, as was already mentioned by others.
Chapter 3 seems segmented to the point I started wondering whats real and what was some kind of dream sequence.
I got lost there too and I had to go back to make sure that I didn't miss anything. This could be easily fixed if the black screens between scenes had some narration or title, just a simple "later after school" would do.
The relationship with Katelyn is rushed. we kissed a little we watch tv together but now she wants to get married and have a family together one day?
We're missing the whole start of it. She arrives in chapter 0, then there's cut, chapter 1, jump to two months later (as said in text) and she already rests on MC while watching TV. So there's something already happening there, it's not just kiss, watch TV and let's get married, she already had two months to think about it. But maybe the very beginning is not important for the story, it's possible.
I agree on the rushed Katelyn relationship though. This happens in other VNs too and I think it's because the devs feel like if they don't provide enough fap material, the readers will lose interest.
Devs can't win with just fap material, there's too much of it everywhere else. A good story, that's a different matter. Give me something interesting, funny, relatable, trilling, dramatic, ... just some of it, not necessarily all at the same time. I used to play games with just handful of images or even no images at all and I liked them way better than many available today with tons of images and animations. Good story always wins!
One thing about the story (and it may be just my wishful thinking), it seem that mother could be the "villain", an obstacle between MC and his true love. As the sister puts it: "She didn't want her little boy to be tainted by some foreign girl's indecency", that's a good start. I'd very much like that, secrecy, sneaking around, danger of getting caught, etc. Although I'm not sure if it's going that way, after the scene where mother sees Katelyn wrapped around MC's leg and it doesn't do anything with her.
Btw, I love the pillow ride, it's definitely cute.
That said, it's not meant to contradict the "story first" argument above.