User blog comment:Roranoa Drake II/Chapter 825: Too Short, but Golden/@comment-24850639-20160502183058/@comment-24850639-20160502194332

Not necessarily, but the way the story has played out up until now, you can't rule it out by any means. Most notably:

- When Luffy 1st finds out about Sanji's marriage, he gets excited at the possibility of his bride joining the crew

- When Usopp/Zoro warn him that Sanji may actually fall for the girl, Luffy's response is "whatever happens, happens"

- Luffy says he wanted 10, but clearly that means AT LEAST 10, not that the train stops at 10. A friend is a friend in Luffy's eyes, and I don't think he'd seriously limit his crew's potential over something so trivial

- Going off of that, Oda said that the next SHs will join "successively". This strongly implies that there will be more than one, whenever it does actually happen. Many people have speculated Jinbe (since he's on Whole Cake) and then either Caesar/Momo/Carrot/Pekoms/Pedro, but I don't think its far-fetched at all to add Purin to this mix, even before we actually know anything about her. "Sucessively" just means there will be more than one, doesn't explicity refer to a number, so it could be all of them for all we know, but I strongly doubt that. Either way, I don't see the people who help Luffy get through this all of a sudden just disappearing after this, I'd imagine they will probably help with Kaido too.