So i got this idea when i was close to sleep last night but it was kind of intresting (someone might have wrote this before but didnt find anything while searching)
Okey, here goes nothing.
Nico Robin escaped Ohara 20 years ago and did join various of pirate crews so stay alive, that made me wonder, what if she join up with rogers crew and for some reason she got caught by the marines and Roger traded hes life for hers? Since hes dream was already forfilled and wanted Robins dream to stay alive. Or something like that…