This is Yuya's edited version of the parent post with her own farewell message written over it. Since it's uploaded to her profile, I'm posting it here in case her media gets nuked at some point.
Revisited this post and found that Yuya had posted an English translation for it in the replies. I'll leave it in the comments for now since I'm not sure where it lines up with the original Korean text
Yuya's Translation:
Hi! I'm Yuya. I said I'd go, but I keep looking back. Is it because of lingering or worry about you? Or Is it because of our story that ended here? But I try not to regret it because I loved you as much as I could.
This concludes our story, but there are new beautiful stories waiting for you, so I won't be sad anymore. May your new story be colored with pretty colors without any hesitation. I hope we have another beautiful beginning for each other's efforts to break up.
I love you, thank you, and sorry. Bye! Please be happy!