Tbh

what are the biggest differences between this manhwa and the drama? I rly like this and idk how the drama could be better plot wise

Welp everyone has different taste, preference and opinions so I can't really say it.
I got bored halfway reading this and didn't reach till chapter 20.
When drama's are made, they completely changes some plots but the drama was literally soo different which kind of made sense and made me more interested and curious about what happens next unlike the manhwa which made me feel bored.
Example could be the ML being a swimmer in the drama meanwhile in the manhwa he wasn't.

I've also read "marry my husband" then watched the drama, it was quite different in the drama but I prefered the manhwa for the starting maybe bcoz of some few changes which could be the phone being completely different, the way the MC's ex died which didn't satisfy me.
But in the end evryone has different thoughts on things so idk

Ahh I remembered.
The main reason which made me bored of the Manhwa was about the starting of the chapter...
The manhwa made the ML be the sidepart of the band where the fans just because the ML joined the band, he was hated.??? Like whot?? I was actually so dumbfounded and then like ML joined the band with no background story of his times as an idol. It felt as if like ML was a newbie who just entered the Showbiz society and that he was made to enter the band just to make him gain some popularity and be equal as the other members.... Because no way in real life would an agency let a novice enter a famous band.
(It's like I entered the famous BTS band(example) and everyone is shocked and stunned that I a nobody entered a famous successful band who started with only 3 members and now is turning into a 4 member band).
I don't mean to be rude tho, it's fictional yes but it's just doesn't sound quite right for the ML being hated because he entered a band....