Nahh is ntr, the guy will find out something at least, the prologue was pretty clear, and even if he doesn't find out that is no requisite to ntr, ther eis plenty (and some of the best) where the ntr ends up with the guy none the wiser (well at least in the story) and remains compeltely oblivious, the better ones like that involve brood parasitism or raising another's man child thinking is his own muahahahahaha
Anyway real question here: anyone knows how the third volume will be dealt with? i bought volume 2 after volume 1 became free but could only find little about volume 3, things like it will be sold in parts or something......