Why I think Su-hyeok and Nam-ra are endgame (despite barely being together for 3 days)

There are several subtle but strong hints throughout the series that suggest Su-hyeok and Nam-ra are endgame, even though their time together is incredibly short—barely 3 days, most likely.

One big clue is that Su-hyeok is the one who's been crushing on Nam-ra for a longer time. So when he finally confesses his feelings, it follows the classic romance drama trajectory: two people confess, spend time getting to know each other, and in the end, seal the deal with a kiss, confirming that they’re meant for each other.

But in this case, it goes even further. Not only does Su-hyeok confess, but Nam-ra immediately confesses her feelings back—and then kisses him. That kiss isn’t just romantic fluff; it’s the highest form of saying she is his forever. Why does that matter so much? Because this is Nam-ra—a girl who rarely socializes with anyone, who almost dislikes physical contact. She's just starting to learn what it means to be a friend. She could have just confessed her feelings and taken things slow, hung out with Su-hyeok to see if things would click, and then confirmed their relationship with a kiss.

But she doesn't. She skips all that and kisses him straightaway. That speaks volumes.

Now, there's another possible interpretation: that she kisses him because she thinks she's dying and doesn't have many options or much time left. But that doesn’t line up with her character. One thing about Nam-ra is that she's extremely self-aware of what she’s doing. Remember, this is the same girl who walked out immediately after realizing she got bit. No dramatic last-minute wishes, no begging for sympathy, no long speeches—just a quiet, resolute exit.( despite having strong feelings for suhyeok she is still willing to go without saying anything(something that cheong-san did before he died) and she only confesses back her strong feelings for him after he confesses his feelings first)

So when she kisses Su-hyeok, she knows exactly what she’s doing. She knows she’s only just started socializing. She knows she has a long way to go if she survives—learning, growing, meeting new people, exploring her own identity. And still, she’s so sure of her feelings that she doesn’t need more time. She knows that no matter how much she changes, or how many people come into her life in the future, it won’t change the love she has for this boy despite the short time that is enough for her to know he is the one for her.

It reminds me of the moment Cheong-san kisses On-jo at the end—not because he has no time or other options, but because to him, she’s the only option. No matter what happens next.

That’s what Nam-ra is saying too