MadelineMaureen

Looks like it. They added the SML, and her disability to the show. They also the timeslip is farther back than in the novel. I think it was like 3 to 7 years instead of 13.

Okay so just remember you asked. Sorry in advance for the long comment.
He fell from a multistoried hotel room into the pool. He was in the penthouse so at least 5 to 10 floors high minimum. From that height it doesn't matter if it's water, it's going to feel like concreate when you make impact. So he most likely suffered from extreme internal injuries. If he wasn't dead on impact he would have been unconscious and unable to prevent water from entering his lungs.
I think that whomever killed him didn't necessarily go there with the intent to kill him. He might have gone back outside to get some air or the argument might have gotten physical and he fell over. But with how high the balcony wall is it would need to be a violent fight or intentional in some way.
Some people are speculating that the taxi driver is somehow involved, but I think it's the CEO. The tears were too fake. The actor is better at acting than that, so I have to think that the off-ness was intentional on his part.
So far I think there are only really 3 suspects with what we've seen/who we've met maybe 4 but I'll explain why I don't think so.

Baek In Hyuk: Possible, had motive for going to hotel room to speak to Sun Jae could have had a physical fight that escalated. Though I do think that they spoke more after the concert I don't think In Hyuk would be able to not break down and confess if he had something to do with it. But I also would never think that they would be as distant as they were during the concert either so...🤷🏻‍♀️

CEO: Most motive to speak with Sun Jae a few hours before midnight. Most likely to have losses if Sun Jae were to just retire...contracts needing to be paid back etc. If Sun Jae were to die he would not necessarily need to payback those contracts. Could continue to make money from rereleasing albums or other "in memoriam" merchandise/content.

Taxi Driver: Guy is extremely sus in 2008, but there is no more info on this to assess why he would wait 13 years to go after Sun Jae. But if there is a plot where the taxi driver did something that got him thrown in prison this is a possibility. South Korea's prison/justice system is a joke with how short their sentences are for criminals. So if Sun Jae was a witness to something it's possible that payback would take time.

Tae Sung: Least likely. We don't know anything about Tae Sung in "present day" the little airhead friend might have heard gossip, but doesn't know what actually happened to him after Im Sol's accident. There is more speculation that Tae Sung is actually dead and has been since 2008. But just humor ideas. If Tae Sung for some reason thought that Ryu Sun Jae stole his life(famous musician) in some way revenge etc. I just don't get that vibe from him.

Unknown Person: We are only 4 episodes in. Sometimes characters aren't introduced until much later that have larger roles in the overall plot.

No Fate makes me ball.

Boxes on boxes on boxes. 📦📦📦

He's probably having to spread his legs for a few shots too. The bts are hilarious with all the different techniques they have to use to get them in the same frame. When blocking the scenes it gets pretty funny watching them work it out with the director.

The more you scroll down the page the more spoilers you will see. There are thesis level speculation comments.
I made a timeline in the discussion section if you're using a browser instead of the app that you can check out to see some spoilers there as well.

I'm hoping that all the video editors who do the edits are going to pull from these extra clips as well. They are getting so many good clips to use already with the show.

I haven't been as active in this comment section because of it. Some people are commenting on episodes that I don't think have even technically aired. Like episode 26-27 I was like...nope...peace out.

Anybody else find it weird that they are in school when they should technically be on summer break? Usually summer break in SK is like mid July to mid August. Which they are currently in, in episode 3-4.

I believe we are seeing his POV from the "original timeline".

Most of the most important dates are clearly noted on screen for the viewer. The ones I included in the discussion are mainly for my own amusement and to keep track of where I am as I'm not binge watching the show.
As am actively watching about 10 North American shows plus 3 or 4 Asian/European shows...plus whatever movie sparks my interest that week I like to have a place to keep track to refer back to later on.

As the character never existed in the original IP and was completely made up for the show...I'm going to go with no.

The longer production time could also have to do with the nature of the show. The back and forth multiple versions of the same scene from different perspectives. Just a few minutes on screen could take a week to film. They are doing lots of day and night shoots outside with very little being on controlled sets in the first 4 episodes. Also looks like there is some location work later in the show as well. So weather could have played a major role.
And as @Yichannvoice said, working around people's schedules could have played a factor. ML was scheduled to do press and publicity for Netflix for Strong Girl as well as the Busan Film Festival in October. Which was in the middle of fliming.
TVing normally has a larger budget for their shows so they are able to take the time during filming and post.

We haven't figured out what triggers the time jumps back to the present. Whether it's a time limit or an external trigger.

Like SO serious, and for WHAT? I was like how are these people doctors. (PhDs)

Do you do better with binge watching shows?

It might be a loop. Or this is just an original timeline POV change. When he is in the hotel the photo is not on the coffee table. So either he gets it out AFTER having opened the door to whomever is ringing the bell or again this is the original timeline flashback.

Made a discussion with important dates. Though most of the people watching this show have watched the episodes multiple times between air dates. I just wanted a central place to put them all without having to scroll for my life.🤣

he NEEDS, future tense, to put her in her place because her other family members can't seem go get it done.

He was in the penthouse of a multistoried hotel when he fell into the water. It would have been like falling on concrete depending on the height. So if he wasn't already dead on impact it would have knocked him unconscious. He would have hand major internal injuries from the fall. It's not the water that killed him it was the blunt force trauma.

No the second time around I noticed this too. Like either he was expecting someone or a "Oh they found me" kind of expression. Cause why is he at a hotel if he lives in Seoul? I don't understand why unless his place was being watched or he was in the middle of moving.