they're not brothers the seme father said in chapter 6 "essentially my secret meetings with Tsubaki (the mother )didn't change anything but friends going out" so they didn't even have sexe with each other so they coudn't make a child the uke's father was one of the mother's customers way after leaving the seme fathers
they're not brothers the seme father said in chapter 6 "essentially my secret meetings with Tsubaki (the mother )didn't change anything but friends going out" so they didn't even have sexe with each other so they coudn't make a child the uke's father was one of the mother's customers way after leaving the seme fathers