Don't get me wrong, I love it too, but before I hated it and I started to like it thanks to Takeda Hiromitsu, more specifically with Akane Wa Tsumare Somerarareru, what I like the most is how the woman ends up corrupted, how she is ashamed of what she does and almost always ends up in a mind break.
The special thing about Akane wa tsumare somerarareru is that she ended up becoming not only the whore of the coach, but also of the whole team.
mainly the CORRUPTION of the girls. Taking away their innocence, taking away their composure and dignity, corrupting their morality.. something like f’cking your ill-tempered female boss and doing it while at work, or taming the tomboy/ojou-sama bully, it just FEELS SO DAMN HEAVENLY. My first ntr was Hitou Meguri Kakure Yu: Mao-hen, the cuckoldry itself is just a bonus.
Moreover, NTR works have better art, dubbing, and the SEX itself. The ahegaos and nakadashis feel more hardcore than what most vanilla works show us.
