i am searching for this manga/hwa!~

the ukes sister and the semes father both died together in a car accident. the Ukraine and seme meet later on when they both attend the same school. the seme gives the uke the fault for his fathers death and thinks that they had some sick relationship. the uke is really sick, thin and visits the hospital a lot.
later on, they go with the class on a school trip where both the uke and seme share the same room. later on, the seme gets jealous because some girl hangs around the uke.

I think it was a manhwa?? the seme had brown or blackish hair. and the uke had lighter hair I think. I've once read the raws, but totally forgot the name!? ╥﹏╥