
I read about this scene in the novel, but i am just sooo confused. I have no idea what that role is that doesn't even appear in the movie. But the MC will act it out. Can someone explain please?

As I am.readjng it. It is a character that is mentioned in the movie but does now have an actor. The character is only told about and from that mc puts together that this character is the one that connects all the characters in the movie by connecting their past.
What he acts out is a scene that a different character talks about in the movie but that is not shown

https://www.mofic.io/novels/O3GWpmbk5ezJn4KR
It's a korean paid novel site, but the first 25 chapters are free and you could just translate the page

wait, i found the english version too:
https://www.mofic.io/en/novels/q2VolejqJPdjNmGQ

This started quite well, but the USA arc really doesn't make any sense. He has a girlfriend, but let himself get seduced and spill out all of the business secret. The whole let's spend time together to tell you about fashion and brands because Stevie Jobs is interested in that is just plain preposterous. He is supposed to be a seasoned middle aged career guy, who should smell from afar that the lady is up to no good. Also, his superiors should have warn him about the other guy trying to steal the deal.
Another thing is the drawings of the females, why do they all have these triple F bra cup sizes? And those bubble butts in mini skirts, it's really rather sexist. It's too bad, this just makes me lose interests in this manwha.

It was a good read at the beginning, but when it focused too much on the business part it got a bit boring. Also having a romantic interest that could be his granddaughter and him just living a second life with someone else's body is a turn off for me. I thought he would return to his body and the real young employee would get his life back. I don't like these soul swapping stories that becomes body possessing stories. I mean, just return to your own old body and give the body back to the guy that is just starting to live life as an adult.
This story is actually quite uninspiring. The whole thing about winning the lottery is to have a good life without working. He opts to use it as a backup to work even harder. I think they could just switch up the winning the lottery narrative with a misdiagnose of a terminal disease or something and nothing really changes. Office work is nothing to glamourise over honestly. It's boring, repetitive, competitive, unrewarding and hard overall. Former office worker here.