usually, the best or well known hentais are the ones with great or decent animation(depending on who you ask). However, in terms of plot/story, they tend to be simple or common. For most people, what makes them stand out is the animation backed with good or decent character design, so let's give other hentais a chance.
this thread is for hentais in which the plot/dialogue is more interesting than the sex scenes they provide, since they tend to have average or below average animation and/or character design
I'll start with pic-related.
Jokei Kazoku Inbou
>A corrupt politician, who's been using his power and influence to screw as many beautiful woman as he can, kicks the bucket. The "lone wolf" son of one of his former employees goes in on a "sleeper mission" of revenge.
the main flaw of this one is ep 2
the VN isn't in english so there maybe some difficulties in knowing more of the story.
Tsuma no haha sayuri
>MC got ntr'ed by his wife, gets 3 milfs in return
dialogue is great, good potential for ntr-vanilla drama
>>4319644
Wasn't there 2 hentai adapatations of this eroge game?
>>4323033
yup, the original one ends with MC and his wife visiting suzune's grave.
the one in the OP, is an alternate story, i.e what is suzune isn't dead.
>>4319644
Even though I liked Ringetsu, I'm quite disappointed that Yuiko was just a side character, especially since she was the most willing participant of the four (though perhaps partly due to guilt). The other girls either rejecting, unsure and meh on the plan.