youraverage-army:

Everything that happens in Euphoria is a continuation of the
ending of Highlight Reel #4 (I’ll call it HR4).

At the end of the HR4, Jin
is wondering

So he changes his clothes (which I’m assuming
is a metaphor for entering an alternate universe) and goes off to find out the
answer to his question.

The first shot we see of Jin in Euphoria is
this

Here he’s wearing the same clothes that he was
wearing at the end of HR4

Then after Jin arrives,things start getting a
lot better. We see the same scenes that have happened in their lives before

Happening again, but in a ‘happier’ setting.

So it looks like
while Jin can’t change the events that happened, he can change the circumstances, and make his friends happier while facing the same situations. Also,they’re all
wearing white clothes.

White is
a colour associated with light, goodness, innocence,
purity, and virginity. This further emphasizes the fact that Jin was
trying to erase everything bad that happened to them, and regain their
innocence. But Jin knows he’ll have to pay a price for
keeping this alternative universe alive, just like he says at the end of HR4

So he knows that at
the cost of his friends ‘euphoria’ (i.e. their happiness), he will have to make
a sacrifice, perhaps symbolized by the jump he’s about to take

But Jin knows what he
has to do, and he happily accepts his fate.

Because maybe, making
things better for his friends is Jin’s personal idea of euphoria.