If you don't want a rant, please ignore this:
So I have another theory about @Hoseokiiss story "Beastly Beauty". This whole time, I've thought that one of the boys must be sending Jangmi those chilling letters. However, in the last chapter the author reveales that the stoey is also tagged under "fantasy ", and got me thinking.
What if none if the boys have been sending her the letters? What if it is a ghost or (Danny)phantom? I mean, I've never seen/read "The Phantom of the Opera" so Idk. But like, what if it's a ghost and this same ghost previously tormented Hoseok? This could've lead to him becoming super paranoid, hence distancing himself from people. The ghost could've been playing mind games with him or something, which then led to him wearing the mask.
I would've just written this as a comment, but ut was too long, and i have no friends to discuss this with so, yeah.