@GoustiFruit:
Only two possibilities:
- Luffy gets captured and the SH have plenty of time to come back to ID (something like one year)
- they get teleportated and arrive just on time to save Ace or to see him die.
There is no way the would be able to come back by their own means in a few days only. Can you imagine Chopper asking his way, even finding a boat or the people to help him come back in 3 days ? Can you imagine Zoro being healed and come back by his own means without loosing himself in 3 days ? Can you imagine Robin freeing herself and finding a way to come back from that secret WG place just in time ? No, too much difficulties for most of them. Moreover, it seems that they will all have their own adventures in the places they are, will learn something important, become stronger, help people there, …
None of them arrived on an island near ID like Luffy did, where they would find some Shichibukai with special privileges allowing them to reach the next island in a few days thanks to a special agreement with the Marine.
Well lets see we'll probably see Sanji fairly soon after ID if Luffy Sticks with Mr.2 after WB's defeat
Chopper can talk to and befriend a bird instead of a schichibukai.
Easy for Franky to get, or even make a boat, with his new possible tech buddies,
We don't know how far the bridge in TW currently goes so Robin could be close to the Red Line if she got to the end of it.
Nami could be closer than we think and ha the best chance of sailing on her own(especially if she can create her own tailwind) so her only real issue is getting down.
Really all the SH besides Zoro&Brooke have straight forward ways of getting back with Luffy. Brooke because impoverished people likely don't have good boats and we don't have any other information guess with…..and lack of imagination. In the end think it will be pretty straightforward too.
Zoro will likely be the last SH to be reunited with the crew and have the most drawnout story on getting back(Perona patched him up to be his servant). We don't know at all if Ussop is even trapped on his island or if Herackles could just get him a ride after going through some shit with him. If its not that easy his story could be longer too.