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Disclaimer: This thread is a rough translation of the original post in theqoo. Please understand that my Korean is not in the very excellent level but I tried my best to translate it correctly to convey OP's thoughts properly. (1/2)
I do not claim any of these theories mine, I am merely translating them. I'll be adding my own thoughts and interpretations at the end of the thread with a 
I think rather than theories, these were like representations and foreshadowing ShinLee has left to the viewers (2/2)
I think rather than theories, these were like representations and foreshadowing ShinLee has left to the viewers (2/2)
WINTERGARDEN DOOR THEORY 
Jeongwon was asked about Gyeoul but his feelings are still “a floor below”.
Ikjun rides a separate elevator and closed the door (since then there were no scenes of them riding an elevator together or even opening a door).
The two () were standing across each other on opposite sides of the doors, waiting for them to open; In this scene the numbers 334 were shown which could suggest that Jeongwon’s feelings, which were a floor below, are slowly rising (there is also an arrow pointing upwards)
) were standing across each other on opposite sides of the doors, waiting for them to open; In this scene the numbers 334 were shown which could suggest that Jeongwon’s feelings, which were a floor below, are slowly rising (there is also an arrow pointing upwards)
When Gyeoul was in danger, Jeongwon got mad and left first without leaving a word of praise, right in front of the closed door
Later on, upon hearing the news of Gyeoul fainting, Jeongwon ran (to the ER) in spite of himself; the doors were open this time. He knows they were open but couldn’t enter and the doors closed once again.
Gyeoul was still waiting for Jeongwon to open the door. However she was not able to enter and in front of the closed door, she was rejected by Jeongwon.
The moment Jeongwon goes out through the open door, he unexpectedly meets Gyeoul, and somehow the feelings he have enclosed poured out.
In the same place, the door where Jeongwon came out closed but when the car where Gyeoul got out appeared, the door has opened again.
He fixed his gaze to Gyeoul, who he has unexpectedly bumped into, but as soon as she lifts her head and saw Jeongwon, his gaze and doors have closed (I think what OP meant here is that Jeongwon diverts his fixated gaze)
But he has again opened another door and unexpectedly meets Gyeoul and unconsciously greets in banmal (informal speech)
Later on the two were in the same frame, and why is there a “restricted area” sign omg?
Gyeoul, who has waited for Jeongwon in front of the door, has come inside his room for the first time and their eye levels which used to be different are now the same. And then the two of them, hugging, are now inside a blue frame with a snowy background.
Bonus… all of you may know abt this rosary crumb
The two of them met when the door in the room where Gyeoul was present was opened.
That time the rosary was caught in the line, but in the end the rosary has touched her.
The two of them met when the door in the room where Gyeoul was present was opened.
That time the rosary was caught in the line, but in the end the rosary has touched her.
THOUGHTS AND INTERPRETATIONS:
After reading the whole post, I thought that the doors were actually used to represent Jeongwon's heart. I think the closed doors suggest Jeongwon’s heart which he has intentionally closed to suppress the feelings he has for Gyeoul.
After reading the whole post, I thought that the doors were actually used to represent Jeongwon's heart. I think the closed doors suggest Jeongwon’s heart which he has intentionally closed to suppress the feelings he has for Gyeoul.
That whenever there are closed doors, it means that Jeongwon at that time is purposefully closing his heart to not let the feelings he has for Gyeoul to come out. https://twitter.com/chaesonghwamnda/status/1298101548438835201?s=20
Jeongwon has once opened his heart to Gyeoul, but maybe because of his plans of entering priesthood, he refuses to acknowledge his feelings and closes his heart again. https://twitter.com/chaesonghwamnda/status/1298101551437733889?s=20
During this scene, Gyeoul was then standing in front of two closed doors – the door of Jeongwon’s office (which he closed himself) and the door towards Jeongwon’s heart. https://twitter.com/chaesonghwamnda/status/1298101554424115201?s=20
There are many times Jeongwon goes out of the door, Gyeoul was there. https://twitter.com/chaesonghwamnda/status/1298101557137780737?s=20
Jeongwon's heart is actually open, but whenever Gyeoul becomes aware of his presence, he closes it. https://twitter.com/chaesonghwamnda/status/1298101562430984192?s=20
During the confession scene, their eye levels matched for the first time. No one is over the other, none of them is the superior. They were the having the same feelings, on the same page, on the same wavelength. https://twitter.com/chaesonghwamnda/status/1298101570295328769?s=20
