
We are the same. I'm also reading yaoi like straight 5 hours until now. Not just obsessed but addicted. I'm worst.
Oh well, so far I think this is the saddest one I've read. Although it's a shoujo and incest but here it is: http://www.mangago.zone/read-manga/flowers_of_evil/. It's kind of a toxic in the mind.

This made me cried so much!! http://www.mangago.zone/read-manga/ashita_shinu/

Sometimes it happens to me. I read yaoi mangas for weeks, after a nice manga i feel like i'll throw up yaoi if i throw up. :D Then i go for webtoons.
http://www.mangago.zone/read-manga/lovers_doll
This made me cry. And i even made my non-fujoshi friend read it ╮( ̄▽ ̄)╭ she was cursing at me when she finished it. (⌒▽⌒)

these are a collection of my favourite sad mangas. especially check those who i rate as level 3. http://www.mangago.zone/home/mangalist/72632/
Ive been reading non stop of yaoi...i think im weird lol lol
im obssesed. what should i do?
anw, please tell me the most sad manga you ever read