This fanfic is purely based on '18 again', the kdrama. 

Jin, who is a man in his 20's will go back at being 18 and will be given a chance to change his life. would he take the risk of changing his life or would he try to go back to his original 20's self?

Again

it ends here.

you know all along

i knew what?

jimin

namjoon

yoongi

hoseok

159pe

jungkook

taehyung

我知道什么？

再次

金身上发生的一切，以及这一切背后的那个人，我都知道。

但我感觉他可能无法理解这一切。

我只希望我能告诉他，我目睹了事故的全部经过。