Yeah, it's like the say "oh? You have your heart filled with cuteness and happy? Here, let me smash it for you"(๑ ټ ) aerslevdi
I were like oh yay happy ending is the best let see what the last chapter is all about.... Than "BAM" the happy feeling just drop down to the floor and the first story happy just crumble down with it too.
Somehow, I'm coming across a lot of yaois where the author throws in that heartbreaking chapter during the end.