Overall the drama left me with good feelings, I like how it ended and that's what's most important to me.

However, I think the biggest drawback is how they didn't elaborate on Myul Mang's past. The scene where they first meet (in the funeral parlor) could've been explained to us? Why was he crying? Who was he mourning? What role did that person play in Doom's life?

There were so many unnecessary moments while I was waiting for Myul Mang's backstory. And sadly we didn't get it at all.

Another thing that bothered me so much was them forgetting each other. If the Deity Girl was super detailed (according to Doom), how come she didn't wipe them out of each other's lives completely? Or did she leave those hints (e.g. Doom's lockscreen) on purpose? That wasn't explained at all, unfortunately.