Don't get me wrong, but the Description's pretty deep and I can sense the Angst oozing from those quotes. However, there's one problem:

It failed to deliver the story. Conflict's clearly on a vacation (unless they'll read the story and find the conflict there just chilling)

It's too short for it to reveal not-so-much of the plot. I've seen alot of stories like this that has vague, unclear Description and I immediately leave it. To some readers (probably) and I, it's a turn-off.

An average lol reader, after reading the Description, will probably say, "I'm not playing guess-what's-happening-in-the-story-game here. Give me my storyline/plot so I will know wtf I'm going to read about." Sure, you catched their interest with the title, but the Descripiton...

Can't really give advice on the Description since I at making stories, let alone a Description.

Characterization's really good! The way you expressed the characters' thoughts was just amazing. You really showed the characters' personalities well. I don't expect any character development here because a) it's Angst (what do you expect) and b) it's a one-shot series, not really chronologically in order, but somehow linked to each other.

I don't see much of the distinction between the characters' voices and that is confusing af when I'm trying to figure out who's the mystery writer. Like, having a distinct voice can give us hints as to who is the mystery writer.

This is how I understand the characters' personalities (so far):

Jungkook's that type of guy who feels like a loner (I can relate so much ;_;) and an outcast.

Taehyung's that suicidal person who hides his trueself behind a mask (o yea i can relate and lived in guilt (proven by the fact that he felt free after learning that he isn't a murderer).

Jimin's that person who's forced to do this, um, 'work' omfgodzilla are you implying that Jimin's a-? Like, a? Jimin, whatever you do, you won't get your jams back xD and I can see form his behavior that he's secretive and reserved (he doesn't reveal much things to Taehyung especially, even about his um, *cough* job...)

They're the only three that I can make an impression of because it's just still 3 chapters...

'His heart shattered, like a thousand petals drowned in crimson leaves.'

And

'The memories haunted him, the present mocked him, and the future abandoned him.'

If this isn't poetic and descriptive, I don't know what is.

To put it simply, the Descriptive writing's incredible, and I can see that you focused on the characters' thoughts more than what's happening around them. And I noticed that you used the repetition technique to evoke emphasis that I don't see much in the other stories...

'That person was amazing. He was someone Jimin would like to get close to. He was someone Jimin looked up to, that one person who inspired him to push himself out of his own comfort zone. He was the one person who gave Jimin the strength to live out of his boring, monochrome life...
 

There's the usual incorrect tense of verbs, some errors in Parallelism, and some missing words throughout the story but other than that, the spelling's good.

E.g. 'Not when he has a promise that was yet to fulfil. Not when he had a wish that has yet to fulfil... Not when their dreams have yet to fulfil should be Not when he has a promise that was yet to be fulfilled. Not when he had a wish that was yet to be fulfilled. Not when their dreams have yet to be fulfilled.