can anyone give me explanation 'bout the ending😭? why the girl keep folloing her boyfriend and who is the guy…
The girlfriend became a revengeful spirit. That was it, really. 😉
Long story.
The girlfriend committed suicide. The punishment is her boyfriend can't remember her in the Afterlife/Limbo world.
Then GF intervened in her BF's fate by stitching him. To do this, she has to visit their memorable places and use the energy/memories they made in those places. In one scene, GF also said she's running out of places to stitch him.
Now when BF returned to life, he can't remember her. He got complete amnesia. It points to the fact that his GF used their memories to stitch him so he won't die. Thus, when he woke up, memories gone.
In the end, the GF lost her sanity and turned into a vengeful ghost, hunting her BF forever. Or, at least until the detective finds her and vanquish her.
However, he has to change some things here and there, since he chose to start with Moving, he needs to find a way to bring the other characters from the other works without completely creating a prequel, at least not yet.
He's reported to be working on Moving 2, which is not in the webtoon version, and the cause of delays in his Hidden webtoon sequel. Moving 2 is probably going to be somewhat similar to Bridge.
The Bridge webtoon is, well, a bridging of Timing and Moving characters. But in live-action adaptations, you have to be flexible because "titles" carry success. It's too risky to introduce yet another title, so it's much better to make Moving 2 somewhat similar to Bridge, seeing other characters from other works.
Once we're introduced to the other characters, then there is room to create a "Timing" live-action adaptation.
If just the drama, then possible she wants the returnee student's help in solving her case.
However, since this is a story set in a Shared Universe, she's probably a character from another work. I've read others mention she could be a character from Timing.
Here are Kang's Super Universe (supernatural/superhero) works:
He didn't remember her in the afterlife world, she told him their story then sent him to find his light, he went…
She didn't. For the couple, she's the only one who can remember, while the guy has completely forgotten her. It's the "punishment" for the girl's suicide.
In addition to that, when she stitched him, she went to places which were significant to them, but never returned to the same place. She even said she's running out of places to stitch him.
This hints that her stitching him is absorbing the positive energy and memories they built together. It can be the very reason why when the guy returned to life, he failed to remember her still even though the evidence is right in front of him (the phone). Their memories were used for stitching him.
If Hyun Min remembered his girlfriend (the moment before he grabbed the light bulb) why did he decide to leave?And…
He did not exactly remember. It is common in real life that when someone is told that they've been in an accident and they've forgotten things, like their spouse, they become very hurt, and sometimes blame themselves. They feel very guilty because they can't remember the person in front of them who loves them. Some will do everything loke pretend, or get to know them again in the dopes that they'll eventually remember or fall in love again.
In this show, they guy tried that. He believes her story. He felt guilty he can't remember the lovely person in front of him. The love of his life. Who weet to so much trouble to stitch him so he can live.
Eventually, when he returned to life, he even saw proof of her story. But, like anyone who experienced amnesia, he can't remember and thus he continually felt guilty about it. He believes her.
That's all there is to it. They simply added a superstition and fictional trope to it in the form of "suicide", which in many cultures is, well… you know.
He's not suffering from delirium, he took the position of the person in the restaurant. The person in the restaurant's…
The lady growing tall was not irrelevant. She's dead, she's lost. She's angry. When she grew tall and scary, it was her "revengeful" side trying to unleash itself.
However, when her girlfriend arrived at the house she's hiding, that's when things changed for her. She started to remember. She started to gain control. And when her girlfriend remembered her, she stopped being a revengeful shadow and regained her human-like appearance and personality.
Then the bus driver apologised and she accepted it.
Finally, her girlfriend returned and chose her, which finally sealed away her revengeful spirit.
Everything is important and has meaning. The writer is an experienced writer. He was also the one who created the webtoon the series was based from. He is considered as one of the pioneers in the webtoon industry.
These are all his works set in the Super Universe (supernatural/superhero).
He's not suffering from delirium, he took the position of the person in the restaurant. The person in the restaurant's…
"Weird things are happening to his eyes". That's a natural effect for being hit in the head. Yes, it is real. There are certain instances wherein if you got hot in the head, it can damage your control over your eyes, and occasionally does that. It's rare, usually a person just die with such a head blunt.
That movement of his eyes is not supernatural. It has nothing to do with his serpent eyes in E08.
This show is a mess and it's totally unhinged. So is the police detective also suffering from delirium since only…
"Delirium" is the official terminology by doctors to anyone thinking they were in another world. It's an "excuse" to explain the unexplainable.
It doesn't mean that they were actually delirious. As we all know, all of them literally came from the Afterlife/Limbo world, where the border between life and death is.
None of them were delirious. They were just treated for delirium because the scientific community doesn't deal with the supernatural and make excuses about it like delirium.
As for your second question, the Detective took on a special job, to hunt ghosts crossing over with revenge intentions, like that truck driver miss Nurse told to wait.
The nurse and the student/daughter did not receive that task, so their eyes are normal. They can see ghosts because they've seen death or were close to it. (It is a common tropi in fiction, which came from superstitions and fringe science.)
1 
Kang's Super Universe (supernatural/superhero) works exists in the same world.
아파트 (2004) Apartment
타이밍 (2005) Timing
이웃사람 (2008) Neighbor
어게인 (2009) Again
조명가게 (2011) Light Shop
무빙 (2015) Moving
브릿지 (2017) Bridge
히든 (TBA) Hidden
Light Shop and Moving are both in 2018.
Long story.
The girlfriend committed suicide. The punishment is her boyfriend can't remember her in the Afterlife/Limbo world.
Then GF intervened in her BF's fate by stitching him. To do this, she has to visit their memorable places and use the energy/memories they made in those places.
In one scene, GF also said she's running out of places to stitch him.
Now when BF returned to life, he can't remember her. He got complete amnesia. It points to the fact that his GF used their memories to stitch him so he won't die. Thus, when he woke up, memories gone.
In the end, the GF lost her sanity and turned into a vengeful ghost, hunting her BF forever. Or, at least until the detective finds her and vanquish her.
아파트 (2004) Apartment
타이밍 (2005) Timing
이웃사람 (2008) Neighbor
어게인 (2009) Again
조명가게 (2011) Light Shop
무빙 (2015) Moving
브릿지 (2017) Bridge
히든 (TBA) Hidden
However, he has to change some things here and there, since he chose to start with Moving, he needs to find a way to bring the other characters from the other works without completely creating a prequel, at least not yet.
He's reported to be working on Moving 2, which is not in the webtoon version, and the cause of delays in his Hidden webtoon sequel. Moving 2 is probably going to be somewhat similar to Bridge.
The Bridge webtoon is, well, a bridging of Timing and Moving characters. But in live-action adaptations, you have to be flexible because "titles" carry success. It's too risky to introduce yet another title, so it's much better to make Moving 2 somewhat similar to Bridge, seeing other characters from other works.
Once we're introduced to the other characters, then there is room to create a "Timing" live-action adaptation.
If just the drama, then possible she wants the returnee student's help in solving her case.
However, since this is a story set in a Shared Universe, she's probably a character from another work. I've read others mention she could be a character from Timing.
Here are Kang's Super Universe (supernatural/superhero) works:
아파트 (2004) Apartment
타이밍 (2005) Timing
이웃사람 (2008) Neighbor
어게인 (2009) Again
조명가게 (2011) Light Shop
무빙 (2015) Moving
브릿지 (2017) Bridge
히든 (TBA) Hidden
This is Kang's Super Universe (supernatural/superhero).
아파트 (2004) Apartment
타이밍 (2005) Timing
이웃사람 (2008) Neighbor
어게인 (2009) Again
조명가게 (2011) Light Shop
무빙 (2015) Moving
브릿지 (2017) Bridge
히든 (TBA) Hidden
In addition to that, when she stitched him, she went to places which were significant to them, but never returned to the same place. She even said she's running out of places to stitch him.
This hints that her stitching him is absorbing the positive energy and memories they built together. It can be the very reason why when the guy returned to life, he failed to remember her still even though the evidence is right in front of him (the phone). Their memories were used for stitching him.
I've read that the detective as well.
The ghost student is supposed to be the one from Kang's «Timing».
In this show, they guy tried that. He believes her story. He felt guilty he can't remember the lovely person in front of him. The love of his life. Who weet to so much trouble to stitch him so he can live.
Eventually, when he returned to life, he even saw proof of her story. But, like anyone who experienced amnesia, he can't remember and thus he continually felt guilty about it. He believes her.
That's all there is to it. They simply added a superstition and fictional trope to it in the form of "suicide", which in many cultures is, well… you know.
However, when her girlfriend arrived at the house she's hiding, that's when things changed for her. She started to remember. She started to gain control. And when her girlfriend remembered her, she stopped being a revengeful shadow and regained her human-like appearance and personality.
Then the bus driver apologised and she accepted it.
Finally, her girlfriend returned and chose her, which finally sealed away her revengeful spirit.
Everything is important and has meaning. The writer is an experienced writer. He was also the one who created the webtoon the series was based from. He is considered as one of the pioneers in the webtoon industry.
These are all his works set in the Super Universe (supernatural/superhero).
아파트 (2004) Apartment
타이밍 (2005) Timing
이웃사람 (2008) Neighbor
어게인 (2009) Again
조명가게 (2011) Light Shop
무빙 (2015) Moving
브릿지 (2017) Bridge
히든 (TBA) Hidden
They're all interconnected.
That movement of his eyes is not supernatural. It has nothing to do with his serpent eyes in E08.
It doesn't mean that they were actually delirious. As we all know, all of them literally came from the Afterlife/Limbo world, where the border between life and death is.
None of them were delirious. They were just treated for delirium because the scientific community doesn't deal with the supernatural and make excuses about it like delirium.
As for your second question, the Detective took on a special job, to hunt ghosts crossing over with revenge intentions, like that truck driver miss Nurse told to wait.
The nurse and the student/daughter did not receive that task, so their eyes are normal. They can see ghosts because they've seen death or were close to it. (It is a common tropi in fiction, which came from superstitions and fringe science.)
아파트 (2004) Apartment
타이밍 (2005) Timing
이웃사람 (2008) Neighbor
어게인 (2009) Again
조명가게 (2011) Light Shop
무빙 (2015) Moving
브릿지 (2017) Bridge
히든 (TBA) Hidden
Shared universes are not new, the MCU thing was not the first. 😉
아파트 (2004) Apartment
타이밍 (2005) Timing
이웃사람 (2008) Neighbor
어게인 (2009) Again
조명가게 (2011) Light Shop
무빙 (2015) Moving
브릿지 (2017) Bridge
히든 (TBA) Hidden