With that first fic I mentioned, I actually thought it was going to be a (relatively) lighthearted one because... that's how it seemed at the start? So the ending was extra shocking. But at least it was a fairly short one... ahaha let's not even talk about long and involving fics.

The sort where at some point you realize it'll probably get darker than you can handle but you can't stop reading? Once missed class because I was both upset and reading onward obsessively.

(Granted, depends a bit on which versions of the character it is, but Delgado!Master and Three especially feel like they're easier too see that way?)