Both ukes are unwilling sexual slaves to other men (in OtH the uke later falls in love with his rapist). KKHnK is darker and more twisted, and contains countless scenes of rape (however, this is not done by the seme).
Both ukes are beautiful Chinese men that are celebrated for their beauty and, at some point, imprisoned by men that rape them. The semes are manly and, at some point in their life, treated the ukes very harshly.
Both ukes are raped by men that are not the semes. In KKHnK, though, uke is raped by both the seme and NOT seme.
They Both Include The Life Of A Prostitute.They Have Similar Story Line And Art Work.
In Me De Shireru Yuro No Junjou It Is About The Love Of 2 Prostitutes Working In The Same Brothel. But In Kinpeibai Kinden Honoo No Kuchizuke Its About The Son Of A Prostitute And How He Followed In His Mother's Footsteps. They Both Are Very Good Storys And Yes They Are Both Yaoi's (Boy Love) Mangas. If Yhu Love One Yhu Will Love The Other.