I readed one very sad and beautiful oneshot fanfic about YunJae.. Yunho was sick and Jae visit him in hospital, later they went to school and amusement park but in the end Yunho died and left Jae letter with ring. Anyone knows the link to this fic?
I really want to read this again :’(
I’m not sure if that’s it, but it seems similar to what you are looking for..
http://www.asianfanfics.com/story/view/281856/how-are-you-angst-sad-yunjae . maybe you mean this fic? it’s very similiar to what you’re described…
how to greet your friend: jaemin versus yunjae