"Every time I couldn't save you guys, you became more miserable. No matter how many times I tried, I couldn't save you. Have I really saved you this time? What will happen to me now? To Tae-hyung? To the rest? If I die, will I still go back to that day, or is this really the end? After this moment, will none of this have ever happened?—Episode 15; dying thoughts"
January 1, 1970
https://en.wikiquote.org/wiki/Save_Me_(webtoon)