Responses
Teahouse. It's a webcomic.
http://www.teahousecomic.com/
But I'm sorry to say...it's been discountinued by the two authors.
*discontinued
There is a yaoi that I want to read again. Every page is colored so I think this is a webtoon (I'm not sure). There is a mansion where they sell prostitution and their customers are aristocrats/royalties. The main couple, uke sells his body and seme is a prince(king?). There is a scene where the seme got mad to the uke because uke had sex with seme's sister. .. sorry if it's too vague. ...Thanks