
I saw that this is based on a novel but i cant seem to search who the author is.

Sadistic-Senpai in the comments here posted the link to the novel:
https://www.4shared.com/office/ym03jI6gce/__1.html

This was such a good read it may come off as boring because of the slow burn but everything wraps up nicely as to why Chansol is hesitant to pursue his relationship with Hanhoo. I feel sad for both of them when they genuinely believe that there is no reason to continue living anymore. But really glad that now they have each other as a reason to live. I really love this. ヾ(☆▽☆)
PERFECTION