EroLightNovels,,, haaah, I just love them especially NTR...
My favorite was "Yume to Utsutsu no Naka de Nandomo Okasareta Shimaitachi"(Sisters), even now,
and I did like magical princess makina. lets's just put that aside.
I did like this way back before but it lack intensity, btw this one has its own doujin game if I remember correctly
In current hentai, this one is underwhelming.
This manga is much milder than the original novel.