URE-046 plot is extremely thin, it probably worked best on the manga, but anyway it’s well done. And it sums up very well what’s NTR all about. Something like this:
Student: T-teacher, I had a crush on you for years. I want to experience having sex with you?
Teacher: There’s no way I can do that, it’s impossible. Here, have a pity handjob.
>Dude cums and goes to sleep beside each other.
>Another student prowls under the blankets and fucks the teacher, not only making the teacher cum but giving her the best sex ever. Student-kun hears all that.
Student: T-teacher, why not me? I want to have sex with you, and btw I have a boner again.
Teacher: Hey, that’s impossible I am a married lady and we cannot do that.
>Goes to sleep again.
>1 minute later, 3 dudes prowl under blankets again and gangbang the teacher, making her orgasm multiple times.
Student-kun: huh… okay…
Moral of the story: Maybe don’t ask.