The title “Reborn Rich” was not about Yoon Hyun Woo being re-born as Jin Do Joon. It was about [spoiler]Jin Do Joon being reborn as Yoon Hyun Woo and becoming[/spoiler] rich!

[spoiler]1. Yoon Hyun Woo did not die, he was in a coma for 1 week. He can not be reborn at all.[/spoiler]

[spoiler]2. When Jin Do Joon died in the 2nd car crash, Jin Do Joon was reborn as Yoon Hyun Woo. Who later became rich.[/spoiler]

[spoiler]3. The “Timeline 2” did not exist. As Yoon Hyun Woo said so himself that it was not time travel, nor possession. It was a repentance for both Jin Do Joon and Yoon Hyun Woo.[/spoiler]

[spoiler]Everything else happened, other than the small changes (he was just recalling a previous life he should not be able to recall at all, that's why there were small changes), exactly the way it did.[/spoiler]

[spoiler]“Reborn Rich” also meant being a new person, rich with values.[/spoiler]

[spoiler]“Reborn Rich” also meant being reborn as a new person after his brush with death, and coming out of the coma (was “reborn”).[/spoiler]

[spoiler]Re: Repentance[/spoiler]
[spoiler]1. As Yoon Hyun Woo, this is his repentance because he chose money over reporting the murder.[/spoiler]

[spoiler]2. As Jin Do Joon, it is his repentance because he did do things he shouldn't, he actually became his grandfather in the end.[/spoiler]

[spoiler]When Jin Do Joon was reborn as Yoon Hyun Woo, it was his chance to repent as Jin Do Joon (previous life) and as Yoon Hyun Woo (present life).[/spoiler]

[spoiler]In the end, Yoon Hyun Woo became part of Miracle, the company he founded in his previous life as Jin Do Joon.[/spoiler]

That was one heck of a story twist. Totally unexpected.