It was a yaoi that took place in a more historical times. I remember the beginning was abo...

It was a yaoi that took place in a more historical times. I remember the beginning was about the older brother teaching the younger how to be prostitute, I think. Then the story goes more into the older brother's romantic relationship with a person who was more from royalty. The older brother was a prostitute as well. He had long hair, a bad eye, and the more recent chapters he fainted during sex