Chapter - 77 is already released on comix, and you can see it's full of foreshadowing. Subin dreams about Woori walking up the stairs and leaving him behind while Subin tries to reach out, failing to grab Woori's hand.
This chapter also had so much foreshadowing. The girl reading Woori's palm said, 'You're never getting married, you have poor intelligence, terrible interpersonal skills, AND YOU'RE DYING TOMORROW.' Then she read Subin's palm and said, 'He has good fortune in wealth, and he'll probably have a great marriage too. He's popular.'
Everything she said about Subin's palm actually describes Woori's current life, because the ring swapped their fates. The hard life Woori was supposed to experience ended up happening to Subin instead. Because Subin and Woori share the same birthday, their fates were exchanged so Woori could live a better life. However, even the ring can't extend Woori's lifespan. In every previous life, he ended up dying because Subin murdered him. I don't think Woori will survive in this life either, since he mentioned he has never lived past the year 2028. The ring might swap their luck, but it can't extend a person's life, which is why Woori can't live past a certain point
Ohh yeah i didn't quite got that when i was reading it first, i was hoping we could see more emotions of him on how the girl tried to read his palm but at the same time he probably isn't surprise that his gonna die at any time, i also think this time subin won't kill him, it could be anything but subin, or maybe it would Woori himself seeing how Subin manage to notice some signs of things in Woori (i could be VERY VERY WRONG) and how lonely Woori can be. I also think that Subin will eventually learn the truth or everything, either the fact this is Woori last life and that he killed him or that they exchange fate since Woori is bound to die, and how Woori mother already thanked him how Subin benefit Woori so much. I feel like its gonna get fr messy...

I just re-read the whole manhwa and I suddenly have a bad feeling. The cover is the funeral portrait of Woori. I previously thought that cover was just referencing his six other failed lives where he died... but what if it's a spoiler that he will die at the end of this manhwa? Now that Subin's life is finally fixed and everything is coming back into place, I don't think Woori will live for much longer. He also died in his past lives because Subin always murdered him, even though he had the ring that stole Subin's luck (the ring couldn't even save him back them). Now that he doesn't have the ring and Subin’s life is finally fixed, Woori's time feels dangerously borrowed.
The foreshadowing is everywhere. It feels like his entire purpose was just to fix everything for Subin and his sister... only to leave them behind once they're finally safe and happy ╥﹏╥