haven’t played the game you mentioned, but actually I wrote a vampire fic once (after I saw hyunjin’s look in that thunderous practice video, holy shit he looks gorgeous there)
it was kinda like Les Misérables meets Interview with the Vampire, basically classic Victorian London, Hyunjin as a orphan selling his body on dirty streets to survive, Chan as a gorgeous 300-year-old savior (or curse), all that stuff. I was a total babystay back then tbh 😂
and I also drew ot8 once for a vampire fic by @ao3jiminly, you should definitely check it out