Help! I need to find this manga!

The protagonist's father dies, so he is left to read his will. His will says he has 6 brothers, so he sets out to find all 6 of them. The protagonist's father happened to be an actor who has a bad reputation as a playboy, and the protagonist inherited those inclinations (thus the yaoi). All of his biological brothers (spoiler) inherited some aspect of their father's hobbies or talents. Three of the brothers in the father's will are actually biologically related to a friend of his who died before his kids were born. Because he was a famous musician, three women volunteered to become the mothers of his future-not-yet-conceived children, for the reason being that he was dying.

Can anyone help me find this manga? I've tried to search all over for it, but I can't seem to find it...

Is it Nanahikari?