maidenholmes:
interesting point, but I don't think that body had a previous owner. "My Heroic Husband" has the frame of a cartoonist resurrecting a favorite character into a different body and different time. The ML's life starts where we see it start. The ML has no past, just the setup for his character and an awareness of business practices in our time. (I'm hoping they make Season 2, really enjoyed it.)
For the current topic:
5. Fated To Love You
if I remember correctly, the body has a previous owner, that's why the FL and her family are surprised by his personality/behavior change etc.
The ML has a "past/previous life" in modern times, which unfortunately hasn't been elaborated on, I hope it's dealt with in S2. I know the outer frame for the story is the cartoonist writing a plot, but I hope all the different layers will get interwoven more elaborately.