This was surprisingly very good, I didn't expect much from the start but at the end I really enjoyed what it delivered.

So first things first this manga has 2 big problems (Aside from the shit blackmail trope I don't think there's any reason to complain about spilled milk in 2023) and both revolve around the artwork.
The artwork suffers from wonky bad art in a good chunk of the manga and some laziness.
You can tell the guy worked and put some effort on the character design for the girl and the NTRman but I can't say the same for the boyfriend who is offmodel 2/3 of the story. The author also did his best in the H-Scenes and they are pretty fine, if his artstyle is up to your alley then you will find a bunch of hot stuff in here, however some panels come up very lazy and characters looks straight up horrible you might notice them during unimportant scenes or the small transitions.
Nothing offensive honestly but with the current fad of NTR being 99% artstyle and 1% story I don't know if this will be for everyone.

And with all that said the ending is one hell of a ride... I'm glad it's not another NTRS trash or bullshot ending in fact this is one hell of an ending.
The heroine broken by the NTRman slowly starts to become a hungry for sex masochist and the NTRman realizes that eventually he might not be the man for this job. Because he knows she will never love him, and the risk of one day not being able to satisfy her in a surprising twist of events he joins hands with the ex-bf. This man immediately realizes (without a problem or any drama actually, what do you say? That's refreshing) how much of a loveless onahole she became so he joins the NTRman for this wild ride. I mean, it's free sex after all I wouldn't say no.

Base +6, blaqkthespian +6, Fofotron +6

自撮りエロ写で脅迫寝取られＳＥＸ
https://www.dlsite.com/comic/work/=/product_id/BJ224724.html

Base +12