I don't remember it's name and no one could tell me. It's a yaoi about a guy who discovers suddenly that he has two sons, already grown, and they go live with him. They're handsome and seductive. I don't remember too well, but at one point they think that they actually may not be related. Then one of the boys tries to seduce him, or it was the two of them, i don't really remember. And since they're not related the father indulges in the seduction, u know what i mean 😉 Umm.. the art wasn't great. But i remember the story left quite an impression on me so i'd like to find it 🙂 thanks for ur help!

This is a little late but...
While I was reading it I remembered this thread because it sounded like it:
Is it story three of Furimuku Dake de Anata Tsumi na Otoko? The only flaw is that they are related...