Long Comment for those not understanding i broke it down. hope it helps

Ok I understand now.
we need to remember that there is our "MC Seonwoo" we know and have read all throughout this manhwa and the "Other Seonwoo" who he replaced in the game world. REMEMBER THAT.

let's start at Chapter 60
Jehee Lee (ML) has regressed/ rewound time
and a pop up notification happened

[a BUG has been detected "System Restoration Process will now begin"] Seonwoo Unlocked.

then chapter ends with a Seonwoo waking up.
This Seonwoo is the OTHER Seonwoo.

Chapter 60

Other Seonwoo was in the GAME world doing his doctor/support thing as normal. and noticed a pop up notification has been in his system for a MONTH now and does not know what it is.

[System Restoration in Progress]

he went home early from work and went to sleep only to wake up in an UNFAMILIAR ROOM.

shocked to see a dirty room with a GAMING computer.

someone called the phone "Mom". it stopped

checked the wallet for an ID.
it was a NORMAL civilian ID.
NOT a Hunter's related ID.
Shocked

and he narrates his story. that during 9 years old he was playing like any normal kid. but all of a sudden got TRANSPORTED to a DIFFERENT world. with monsters and hunters
and a system for hunters.

he is now an orphan trying to adapt and survive in this new world and after many years became this sort of doctor/Support with a clinic.

but the NOTIFICATION from earlier happened and now after waking up he's in THIS world. the REAL WORLD. we now learn that OTHER seonwoo is actually from the REAL world.

his mom called again. he answers crying and we get that talk. he never knew he could come back and was happily crying that he is home.

cut to him going back to see his parents. we learn from his Mom that when he was a KID [Nine years old maybe]. he always talked about wanting to be a Hunter and Hunting monsters

cuts to Other Seonwoo going to an interview in a big company. bumps into REAL world Jehee Lee (chaebol heir of the company who's having issues with the succession of the company) and Chorok (his assistant/bodyguard). after that scene. their lives are worlds apart. Real world Jehee Lee is suspicious of this dude so he wants him to get investigated.

while Other (Real world) Seonwoo goes to his interview. His story stops there.

CHAPTER 62

we are shown that MC Seonwoo is inside this blank system world. watching Other Seonwoo back to his Original life/world.
him realizing that he was actually the GAME world Seonwoo. he cried learnin that his real parents were actually dead.

he got his emotions sorted. and now is trying o find a way to get back to the GAME world. His world. for Jehee (ML). he walks and we now learn that him going back to his world is connected to the watch Jehee gave him so he keeps on walking no matter how long it takes.

and it cuts to our MC Seonwoo waking up in the GAMe world but due to going back in time. he doesnt have memories of the last regression. we are now back at CHAPTER 1.
Him remmebering he was gaming in his computer last night and went to sleep afterwards and now he's in a different place. checked his ID. and it was HUNTER's ID

Someone was at the door and it was Jehee remembering his promise/talk of meeting him in a better way than last time they met aka kidnapping and enslavement rin. so hence the flowers.

The End