Chapter 2: Ohmygod, thanks for the explanation because the ending was kinda weird xD I thought he went cray and was the one who killed her omg. Well what a way for someone to die though : /
The ending was unexpected. When I first read it I thought she probably left him, but omg. I feel bad for gayoung, though… like she just died there while at the ending, he acted like finding her coprse under his bed was no big deal or something. But then, why did the cabinet door and cups fall if it wasn’t windy? Also I get that you want to make things mysterious and vague, but I think it would be better to put the explanation in the story so it would have more of an ending? Maybe you could envision their fight at some point, so we can get more of an idea of what’s happening and how he thought they got ‘seperated’ ; overall, it’s a rather… intriguing and weird story xD

Chapter 2: That was such a sad and creepy read! I really loved the bits of mystery that you put in because I had no idea where Gayoung went until the end. It was fun to read about how Gayoung always haunted Daeyeol's dreams even after she died, and it was great that she was finally put to rest. Also, thank you for putting a clarification chapter, it was nice getting a sense of their lives before the events in the story. :)

Chapter 1: Woah :o the fact that she was dead, under his bed, the entire time just has me like- what? Because if I found that out I'd probably die myself because- ewwww. Talk about horrifying! He was sleeping on top of her dead body and- wow. </3 I've never read a story with a character who couldn't smell, and honestly, I find it oddly refreshing and very intriguing :D

Chapter 1: AH I made the mistake of reading this while eating breakfast!!! >.<
That horrid note aside haha, this was an interesting story. As I first began to read it I wondered how in the world it fit with the prompt lol but oh yes, that's so perfectly sensible!!! I like how vague you left things, such as the fact that he had anesmia and even Gayoung's name, and the fact of Dara's occupation, for later in the story to reveal: that wad interesting and kept with the theme of discovery.
As for the realism, well of course I question it, but I do appreciate the explanation that went into it and that made it fit a bit better. I would suggest adding the facts of how it happened to the end of this chapter, actually... that way, it is still in part of the story and someone can't just jump to the spoilers first haha. Simply adding it as like, "the police said that" and explain would fit well.
All in all this is a very unique and creepy and disturbing story... and well done!!!

Chapter 2: Well that was certainly an interesting and unexpected twist. The only thing I might suggest is that you add some description or explanation of what anosmia is at the beginning so that readers may be better prepared to understand what's "wrong" with Daeyeol. Yes, we can look it up ahead of time, but in case we don't (*raises hand sheepishly because I was trying to figure out what it was without looking it up*), this really helps set the stage. Other than that, I was certainly taken aback by the ending. It was quite unexpected. I mean, I didn't know where it was going anyway, but to have that reality just struck me. >.>

I will say that Dara's personality was a bit off-putting. haha I know she was supposed to be helping Daeyeol, but damn. She mostly seemed condescending or patronizing, which isn't entirely unexpected when dealing with doctors, but still... heh I was also a bit confused about the explanation at the end, even with your personal touch. I get that you wanted her to end up there and why she hid there makes sense, but I'm not sure why she passed so quickly. That just felt a little odd that she lost consciousness and then... Yeah.

Otherwise though, definitely points for creativity! Not my usual read here, but fascinating all the same. haha Well done for finishing it too! ^_^

Chapter 2: OMG this is so good!

Chapter 1: didnt expect that ending.......... this was so short but good at the same time !