Responses
are they twins cause it's the last two stories in this one:
http://www.mangago.me/read-manga/love_knot/
Yes, it's really this one, thank you very much!
I wanted to read again a yaoi where there's two brothers, both with red hair and the manga tells the story of these two with his lovers. I remember that the lover of one of them was gone for a year i think and than came back and i think that the other brother is a teacher of art university, something like this. Sorry for my bad english xD