Olga_9
Oh, I know with who the mc should end up together! Charlotte LinLin aka big mom. Young big mom was pretty good looking. Kaido was about to escape and king/Alber would go with him. Now we know, Kaido was captured multiple times by the marines in which vegapunk took some of his blood for the artificial devil fruit and kaido escaped with king/alber. But I’m not too sure, if rocks is already dead or is about to die. Anyway, charlotte linlin would be an unique ship. Well, as long as she hasn’t started to sleep with others and have children, but that is something you can change, if necessary. Would be also a good combination I think. The mc has a yonko protector/lover. Take over a good territory, maybe wano? Build a solid crew and start researching/creating stuff. Also use your knowledge of the one piece anime/manga. Try to recruit promising people, like aokiji maybe? Sabo and ace. Boa Hancock. Dragon? Law? Zoro and sanji early on.
Have him remove queen’s memories with a device he had already prepared. Wouldn’t trust him too much to be honest. The system should be a creation system, which allows him to “recreate/create” stuff yk. But like things from other worlds. Romance? Honestly, no clue. 30 years before canon starts… but the mc, Lilith? Will she now be called Lilith? Still be called vegapunk? Identify as a female now? Shoukd tbh. Can potentially life for ever, with knowledge and iq