User blog comment:Kaido King of the Beasts/Reiju will Enrage You/@comment-24850639-20161004153602

I thought she was good the instant we met her. While Yonji tried to claim his relation to Sanji was a big secret, Reiju had no qualms revealing the family ties, and thanking the Straw Hats for taking care of her little brother all these years. Yonji makes a mental note of Luffy, so at the very least the Vinsmoke Family is fully aware of who the Straw Hats are, and their connection to Sanji. They were thus also aware of the Straw Hats intention to stop the wedding. If we entertain the idea that Reiju's first loyalty is the Vinsmokes before Sanji, then we'd have every reason to believe that she would at least report their presence to SOMEONE. She chose not to, and it would seem she's holding Yonji to the same thing. You can argue that she saved Luffy's life simply because of her palate for poison, but that wouldn't explain her overall attitude towards them. It honestly reminds me a lot of when we first met Nico Robin. She was working for the bad guys, but did a lot of little subtle things that made you question just how "bad" she is.

Again I think Reiju is good overall, but I also do see a lot of potential for duplicity. My main issue right now, is that she's made 2 distinct points that gravely contradict each other: when Sanji first arrives, she tries to persuade him of all the benefits of living like a Prince, and denounces his "mundane life" with his "puny pirate crew". However in this most recent chapter, she questions why he bothered to come back knowing that he doesn't have any real positive memories there, and what would happen with his brothers. So at this point, my only real possible angle on it is that Reiju is working either for her own interests, or the interests of someone else, but not the Vinsmokes. She may be some kind of double agent, or just simply looking for an opportunity to break away. If Sanji proves himself strong enough, he can most definitely be an ally for her, along with the Straw Hats. Don't have any definitive evidence, just the soft stuff that Oda likes to hint with. Like not showing her in the panel where Sanji listed all the foul things the Vinsmokes do, having her be the ONLY person that acknowledges his strength (Yonji, Judge, and Niji have all had opportunities to witness how much stronger Sanji's gotten), her caring about the amount of lives saved on Broc Coli while the rest of the family only cared about getting paid, and most obviously all she's done for Sanji. Characters like this make me appreciate good writing.