I actually started this drama after finishing 'The beauty inside" , I came cause I was drawn by Lee Min-ki,
It started off pretty good , but as I kept watching I kind of got fed up with some meaningless scenes. Especially the ones with the side characters love etc. I just could not care less about them and I ended up skipping those part after a few scenes of them.

Main actors were fine , but there is a serious problem with the plot / character development.
I don't understand how he went from this self absorb character , into a caring kind guy pretty quickly and for some reason nearing his death he decided to go off the rail eg the sudden break up , constantly being mean to the girl in hopes she forgets about him but for some reason he still stuck around the house to write etc.

Also is it just me or the whole man in white got discarded pretty fast? It's only when he started going invisible did he only realized 'yes , there's that issue where my days are numbered"

The rival thing was weird too. As if the writers does not knows what to do at all. FL clearly loves ML , but for some reason it's like "well , we need a rival thing to make things interesting? So I'm going to act indecisive and drag this on an episode or two so you can see the guys fight over me" ? huh? lol

The near end and ending throws me off too. Eg when he finally came clear to her , he only has like a week left , and yet they went about their daily lives as if there is no need to be any precious last moment time to be spent together. They even have the rival slept over again LOL.

The rip scene where he also suddenly insert the joke that the 49 days is actually 49 years cause he misheard due to surroundings interruptions. I mean .. idk who thought it was a good idea to throw in that joke in a serious final moment like that. I could really go on and on with the endless plot holes but I'm going to stop now.

Honestly I watched it till the end cause I'm a fan of LMK from his other drama , still am , he seems passionate with his acting but I pray in his future series , he will get a much better writer. I felt really sad that they just wasted his talent like that .