Did you forget what happened to the dream and ilic's reaction after waking up to that dream? Ilic realized he has feelings for sayan, however, i assume this is called care/concern or maybe even a tiny bit of love. Not the same definition and intensity of what is sayan have towards ilic but i guess it's enough for him to still choose to be by sayan's side til their death. Ilic though doubtful of sayan's feelings back then have also finally accepted it, as what was insinuated in previous chapters from ilic's perspective. Not the typical enemies to lovers or hate to love story but what matters is that sayan has mellowed down and ilic has his own will to either stay or leave.
SPOILER NOVEL
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Hey guys, in the novel Ilic actually does have a dream that Sayan will die, and even though he doesn't die in the novel itself, it is heavily implied that he will die later on because he is super sick. Also, Ilic never actually tells him that he "loves" him, as that was added in the webtoon. In fact, it is made pretty clear that even though Ilic understands they are a couple and cares for him, he doesn't love him the same way Sayan does, like true love. On Twitter, someone asked the author to please tell us if Ilic actually loves Sayan in the end and she said she would "leave it to our imagination," but that is what the novel implies, that he doesn't love him the way Sayan wants. Then in another tweet someone begged her to please just say he loves him and she literally said "no" xD, meaning she won't confirm it but it is understood that he doesn't love him. I was reading another forum discussing the ending of this novel and honestly everyone feels the exact same way xD In fact, if you go back and read this webtoon with that mindset, you'll realize it really is like that.
The story closes with Illic noting, "I kissed Sayan ALIVE in my arms." Sayan is severely sick, and Illic already had a premonition dream about his death. It serves as subtle foreshadowing that, despite this moment of intimacy, Sayan doesn't have much time left.










When fujoshis die, we will be like this ghost lmaooo but anyway, this ending is abrupt and lacking!