I don't really understand

Base +8, Resike +6

Crashman

From what it seems, a husband of a heroine decides to get a younger superhero to give her the good D.

Young superhero thinks he's about to cuck the dude.

However, he doesn't realize that woman is 100% faithful, dude knows his way around ropes, and woman is sterile.

So...cuck attempt failed. And superhero dude is sad.

Base +7, voellerich +6, Resike +6

@Crashman

The couple, as in both the man and the woman are into it, and the woman actually loves the guy so she is not going to leave her husband for another man even if the sex is better, which apparently was not.

Base +8, Resike +6

Japanese netorare should actually end like this :p

Base +6, Resike +6