Played it again, and here are a few notes:
1) With the sandbox, allow the MC to discover some of the cucking. At two instances come to mind. a) Day one, if we go to the nurses office, let the teacher and the nurse be fucking behind the curtain. MC is too shy to go in/naive to realize what is going on. b) When MC is told rebecca is going to talk to the teacher about somthing, we KNOW what it is going to be, even if the MC is clueless. So let us discover it, say in the nurses office again. Noting big, keep it in line with the pic we see later. Just some general dialogue of, "oh wow. Its big." etc etc etc.
2) As others have said, more of animation would be great. Static imagines are always disappointing.
3) Not sure if the image the friend shares in the computer lab is supposed to be "uncensored" but it is. Also, based on the dialogue, it is obvious its the MC's mother. (or it could be the friends mother.) Either way, it makes little sense for her face to be uncensored and the two boys to NOT realize who it is, regardless of whoever's mother it is. That makes me think it was meant to be censored, but somhow wasn't.
4) I know one of the whole premises of NTR is that the MC is glaringly oblivious. Hence them not recognizing rebecca with the "cock as a censor" trope. However, at least one line of "she does look familiar, I just can't place it." wouldn't be remiss. They are already commenting on the uniform being from their school. To not be like, "that hair looks familiar. How many redheads are in our school" can be excused with a simple, "she looks familar, I just can't place her."
Overall, I like it. Alot. Really like the character art, and appreciate the wide variety of body types, from busty to very petite.
I would love to see additional female student characters added, whether from MC's classroom or another. 3-5 would be ideal. Would also like to see some defloration scenes from some of those characters, where it makes sense for those characters.
I love the teacher's huge cock and the cumflation going on. I always find it hilarious and enjoyable. I would like to see some of the girls, especially some of the smaller ones, struggle to take the cock though. Let it be painful for them at first. Somthing that big doesn't have to slip in all the way every time.