Note: I am docking one star outright because of the atrociously hideous homeless man. Yes, it's shallow. Sue me.
I'll preface this by saying that I am not someone that normally plays NTR, let alone anything that includes ugly bastards. That being said, this game is actually somewhat enjoyable despite this.
Those who are into NTR may find that this is essentially NTR-lite. Why? The girl isn't necessarily stolen outright but rather forced into the situation and that you get to Stockholm Syndrome her into loving her buyer, the teacher. You won't really feel bad for the boyfriend at all since he doesn't even do anything to you. Not even a single event aside from the first few days is the boyfriend ever the one taking the initiative to do anything.
To me, the real 'NTR' lies in the other two men whom the MC can fuck with: the fat otaku friend of the BF and a homeless rapist. I say 'NTR' because the girl is technically being stolen away by them from the teacher and have their own routes. These routes also have their own tales, I guess.
The teacher's the default where he Stockholm's the MC into loving him. The otaku is closer to the traditional NTR tale where the boyfriend gets cucked by his fat fuck of a 'friend' due to a combo of his own weak-willed nature and also the MC somehow being more of a slut, which kind of contradicts her usual nature with the teacher. Then there's the road to utter degeneracy with the homeless rapist.
The art of this game is typical of the genre: hot girl, ugly man. However, the 'uglies' aren't that horrible to look save for the homeless man, which actually looks about as good as he smells. Words cannot describe my disgust when I nearly started the homeless route and was glad that I could avoid getting raped by him. The animations are okay but definitely above the standard of the usual RPGMaker fare.
The gameplay is pretty simple: you go around and trigger activities, go back home and get choose to either go straight to bed or get fucked. You accumulate points when you get fucked, which is the result of a minigame where you get to molest and fuck her kind of like those touch-n-fuck games since there are meters to look out for.
The MTL is...passable. It's enough to understand the gist of it but good luck trying to grasp each sentence. Fortunately, this ain't a very deep game so skip away to your heart's content.
All in all, if you could stomach the art, it's worth a try if only to see how far you could go before your eyes bleed.
Edit: Changed it to 2 stars because of suspected MTL-induced breakage of game due to inability to actually complete 2 out of the 3 main routes.