Huuh, I really hope this manga doesn't just turn into a stupid fuck fest. The plot should be there for yknow telling a story, not just a decoration/excuse for him to fuck every person in his life.
I don't mind smut/sex being used in stories but I feel like it shines the brightest when it is utilised for actual plot purposes and like symbolism and shit. Especially considering it's labeled a psychological.
So far to me all it's saying is that "women use sex as a weapon against men" which honestly is a horrible stereotype but eh if you wanna write about that I ain't stopping you.
Of course it could just be going over my head or maybe this manga just isn't for me. Either way it's just my personal opinion in the end. I ain't shaming anyone who does want it to go into that direction or sees something else in it.