So this manga was about a young rich guy in his 20's. He is very smart, charming and manipulative. He sleeps with both men and women. In one of the chapters he slept with the son of his rich older lover and the father killed his son because of that. And he also went on a vacation and there he met a rich guy who was in his 30's (I think) and they had sex. At the end he was kidnapped and raped(?) but then someone saved him.

Sounds really interesting~
Too bad I haven't a clue which manga it is.

Hi, I found it. It's human club 🙂